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Background: Patient satisfaction is the primary goal in breast augmentation, but in a few cases patient satisfaction and surgeon satisfaction are in disagreement., Objectives: The authors try to explain the reasons associated with disparity between patient and surgeon satisfaction., Methods: Seventy-one patients who underwent primary breast augmentation with dual-plane technique, with inframammary or inferior hemi-periareolar incision, were enrolled in this prospective study. Quality of life was evaluated with BREAST-Q preoperatively and postoperatively. Preoperative and postoperative photographic analysis was performed by a heterogeneous group of experts who completed the validated Breast Aesthetic Scale (BAS). The patient satisfaction score was compared with the overall appearance as determined by the validated BAS; a difference in score of 1 or more was considered a discordant judgement. Statistical analysis was performed with SPSS version 18.0, with values of P < .01 considered statistically significant., Results: BREAST-Q analysis showed a significative improvement in quality of life on the psychosocial well-being, sexual well-being, and physical well-being chest scale and satisfaction with the breast (P < .01). Of the 71 pairs, 60 had a concordant judgment between patient and surgeon, and 11 were discordant. The score expressed by the patients (4.35 ± 0.69) was on average higher than that of the third-party observers (3.88 ± 0.58), with P < .001., Conclusions: Patient satisfaction is the main goal following the success of a surgical or medical procedure. BREAST-Q and photographs during the preoperative period are helpful to understanding the patient's real expectations., (© The Author(s) 2023. Published by Oxford University Press on behalf of The Aesthetic Society. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Summary: Abdominal wall reconstruction represents a complex challenge for plastic surgeons, given the variable range of clinical situations requiring restoration of abdominal wall integrity. When significant myofascial defects are encountered, repair with either a synthetic or biological mesh is indicated, both of which have advantages and drawbacks. Taking inspiration from Gillies' fourth commandment of plastic surgery- Thou shalt not throw away a living thing -an innovative technique to obtain a vascularized autologous mesh from the tissues usually discarded during abdominal contouring procedures was conceived. The authors describe how to maximize the use of perforator flaps derived from abdominoplasty excision patterns in abdominal wall reconstruction to simultaneously obtain restoration of abdominal wall integrity and improvement of the abdominal contour., (Copyright © 2022 by the American Society of Plastic Surgeons.)

Introduction: The purpose of this study is to determine if there is a better quality of life with one of the two techniques and if the results are in line with those already present in the literature. The hypothesis from which we started is to demonstrate that cancer patients who undergo a deep inferior epigastric perforator flap (DIEP) breast reconstruction surgery are more satisfied and have a higher level of quality of life compared to those subjected to an intervention of reconstruction with prosthesis., Materials and Methods: All patients undergoing reconstruction from January 2010 to July 2018 were eligible for inclusion. This is a retrospective cohort study carried out using the patients of two plastic surgery departments who have undergone monolateral or bilateral implant-based or DIEP flap breast reconstruction. We administered BREAST-Q questionnaire electronically almost 2 year after surgery. Patients were divided into two groups: implant-based and autologous breast reconstruction with DIEP flaps. Baseline demographics and patient characteristics were analyzed using a Students t-test (continuous variables) or Chi-square/Fisher's exact test (categorical variables). Mean standard deviation BREAST-Q scores were reported for the overall cohort and by modality for the postoperative period. The linear regression model was applied to all BREAST-Q score with all predictor factors., Results: Of the 1125 patients involved, only 325 met the inclusion criteria and were enrolled in this study; specifically, 133 (41%) DIEP and 192 (59%) prosthetic reconstructions. We summarized the results of the principal scales of BREAST-Q module: satisfaction with breast, psychosocial well-being, satisfaction with outcome, and sexual well-being in which the autologous group was always more satisfied. We reported results of all linear regression models with higher values for the DIEP group independently from predictors., Conclusion: This is the first study performed on the Italian population that compares autologous surgical techniques with the implantation of breast implants. In this population, DIEP is considered the technique that leads to the highest satisfaction in all BREAST-Q scores., Level of Evidence Iv: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 ., (© 2022. The Author(s).)

Introduction: This study aims to analyze whether there is any patient- or treatment-related factor that can influence patients' body perception after mastectomy and autologous or implant-based breast reconstruction., Materials and Methods: This retrospective cohort study included patients who underwent immediate implant-based or DIEP flap breast reconstruction. Predictive factors analyzed included chemotherapy, radiotherapy, hormone therapy, body mass index, age, type of mastectomy, and follow-up length. The BREAST-Q was administered postoperatively almost 2 years from the last surgical procedure. Mean BREAST-Q scores were reported for the overall cohort and by modality for the postoperative period. A linear regression model was applied to all BREAST-Q scores with all predictor factors., Results: In total, 325 patients were enrolled in this study (133 DIEP flap and 192 implant-based reconstructions). The DIEP flap reconstruction group with a previous nipple sparing mastectomy showed the highest scores. Patients with a longer follow-up were less satisfied than the ones with a shorter follow-up, which could be considered as an assessment of the outcome. No significant difference was reported between patients who underwent radiotherapy, chemotherapy or hormone therapy and those who did not. Furthermore, age and BMI had no influence on patient satisfaction., Conclusion: This study is the first that groups a large number of patients and analyzes predictive factors of long-term satisfaction of patients undergoing breast reconstruction. This can be regarded as a pilot study to raise the awareness of everyone's clinical practice to predict the attitude that patients have after surgery and to prepare them in the best possible way., Level of Evidence Iv: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com ., (© 2021. Springer Science+Business Media, LLC, part of Springer Nature and International Society of Aesthetic Plastic Surgery.)

Competing Interests: Conflicts of interest and sources of funding: none declared.

Introduction: In conducting this study, it was our presumption that lipofilling is a necessary and simultaneous adjunct to lifting the middle third of the face in patients with negative lower eyelid vectors, enabling satisfactory and enduring aesthetic results., Materials and Methods: Eligible patients met the following criteria: (1) primary midface lift in subperiosteal plane; (2) negative inferior eyelid vectors at preoperative baseline; (3) postoperative monitoring for ~ 2 years; (4) standard pre- and postoperative photo-documentation; (5) proficiency in Italian language; and (6) signed consent for study participation. Informed consent pertaining to photography allowed for subsequent publication. Pertinent patient data were also collected as follows: age, sex, duration of follow-up, type of surgical procedure, related secondary procedures, quantity of fat injected, nature of incision, and patient satisfaction level. Complete randomness was thus conferred during computer-assisted patient assignment to one of two study arms: midface lift only (group 1) or midface lift plus facial lipofilling as a concurrent operation (group 2). All patients completed Italian versions of the FACE-Q module, which were issued by e-mail approximately 2 years postoperatively. Two plastic surgeons reviewed all postoperative photographs of treated patients and rated outcomes on a scale of 1-5. Statistical analysis was powered by standard software expressing categorical data as numbers and percentages and quantitative data as means ± standard deviations., Results: Between January 2016 and March 2018, a total of 56 patients (women 48; men 8) subjected to primary midface lifts in subperiosteal plane at our Plastic Surgery Department met all criteria for study enrollment. Mean patient age was 56.5 years (range 40-70 years), and the mean follow-up period was 2.1 years (range 2-5 years). Differences in postoperative FACE-Q scoring by the two groups were significant (p < 0.01) across all domains. Outcomes in patients of group 2 remained stable during long-term follow-up, whereas significantly more secondary procedures were pursued by patients of group 1 (p < 0.01). Compared with group 1, the two reviewers encountered significantly greater satisfaction with surgical outcomes among patients of group 2 (p < 0.01)., Conclusions: In FACE-Q scoring, those undergoing lift-and-fill procedures reported the highest satisfaction levels., Level of Evidence Ii: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Introduction: This randomized controlled study aimed to analyse the long-term results of thin-skinned patients who underwent rhinoplasty., Materials and Methods: All the included study patients had the following characteristics: underwent primary rhinoplasty for functional and/or cosmetic problems, were thin-skinned, had been followed for almost 2 years, underwent both standard pre- and post-operative photography, had a good understanding of the Italian language, and had signed a consent form for inclusion in the study. The patients were randomly divided into 4 groups as follows: group 1, camouflage of the dorsum by diced cartilage; group 2, camouflage of the dorsum with lipofilling; group 3, camouflage of the dorsum by a temporal fascia graft; and group 4 (control group), without camouflage of the dorsum. Patients answered the Italian version of the FACE-Q rhinoplasty module. The Obagi skin pinch test was used to measure nasal skin thickness. We compared pre- and post-operative patient satisfaction with the appearance of their nose between the 4 patient groups by the Chi-squared test for unpaired data. Two plastic surgeons reviewed all the post-operative photographs of the study patients and rated the photographs on a scale of 1 to 5., Results: A total of 101 patients who underwent primary rhinoplasty between January 2016 and March 2018 in our department of plastic surgery and satisfied the inclusion criteria were enrolled in this study. The mean patient age was 38.5 years. The mean follow-up time was 2.5 years. The differences between the preoperative and post-operative FACE-Q values for group 1 were significant (P < 0.01), whereas the differences between the preoperative and post-operative FACE-Q values for the other groups were not significant. The results for group 1 patients remained stable over the long-term follow-up compared with the results for other groups (P < 0.01). Groups 2 and 4 underwent more secondary procedures than groups 1 and 3 (P < 0.01). The 2 reviewers determined that patient groups 1 and 3 obtained more satisfactory outcomes than groups 1 and 4 (P < 0.01)., Conclusions: This was the first randomized study to demonstrate that diced cartilage grafts used for thin-skinned patients was the best approach for obtaining a satisfactory long-term outcome and durable natural appearance., Level of Evidence I: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Introduction: The aim of this randomized controlled study was to analyze the long-term results of patients undergoing rhinoplasty because of severe septal deviation and to evaluate the stability of results., Materials and Methods: The study was performed with a randomized design. Patients were randomly divided into four groups: group 1, spreader flaps were used in combination with spreader grafts; group 2, spreader flaps were used alone; group 3, spreader grafts were used alone; and group 4, neither spreader flaps nor grafts flaps were used. Patients answered the Italian version of the FACE-Q rhinoplasty module. Anthropometric measurements were performed by AutoCAD for MAC. We determined the angle of deviation, and we compared the pre- and postoperative angles and compared patient satisfaction in the four groups using the Chi-squared test for unpaired data. Two plastic surgeons reviewed all the postoperative photographs of the study patients and rated the photographs on a scale of 1 to 5., Results: A total of 264 patients who underwent primary rhinoplasty between January 2010 and September 2016 satisfied the inclusion criteria and were finally enrolled in this study. Anthropometric measurements revealed statistically significant differences (P < 0.01) between the preoperative and postoperative values for the angle of septal deviation in group 1 versus the other groups. Over the long-term follow-up, group 1 maintained an angle close to 180 degrees (P < 0.01). Group 1 and group 3 were more satisfied compared with groups 2 and 4 (P < 0.01). According to evaluations by the 2 reviewers, group 1 and group 3 were the most satisfactory outcomes (P < 0.01)., Conclusions: This was the first randomized study to show that the combined use of the spreader flap and spreader graft is the best choice for a good long-term outcome and durable correction of septal deviation., Level of Evidence Iv: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Rickettsial diseases continue to be the cause of serious health problems in Italy. From 1998 to 2002, 4,604 clinical cases were reported, with 33 deaths in the period from 1998 to 2001. Almost all the cases reported in Italy are cases of Mediterranean spotted fever (MSF). Other rickettsioses that have been historically documented are murine typhus and epidemic typhus. Since 1950, only sporadic cases of murine typhus have been reported, and Italy currently appears to be free of epidemic typhus. As in other European countries, imported cases of rickettsialpox, African tick-bite fever (ATBF), and scrub typhus have been reported. In 2004, three cases of a mild form of rickettsiosis were serologically attributed to Rickettsia helvetica.

Bartonella henselae has been identified and characterized for the first time in Italy. A strain, designed Pavia-1, was isolated from the blood of a cat whose owner developed cat scratch disease (CSD). Pavia-1 and two American B. henselae strains (Houston-1, ATCC 49882, type I and strain 269608, UC Davis, type II) were compared by whole-cell fatty analysis (CFA), sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) for protein profiles, Western immunoblotting (WB) for reactivity with polyclonal antibodies, polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), type-specific 16S rRNA PCRs, and pulsed-field gel electrophoresis (PFGE). Bartonella clarridgeiae (ATCC 51734) was also included for comparison. Pavia-1 was identified as a B. henselae type I. PFGE allowed differentiation between B. clarridgeiae and B. henselae and furthermore, between all the B. henselae strains. The fingerprints of PFGE observed for Pavia-1 were distinct from those of B. henselae type II and also of Houston-1, suggesting that the two type I strains derived from two different clones. These results show the capability of B. henselae to develop genotypic variability between genetically related strains.

All reference strains described as representing separate serovars belonging to the serogroup Pomona and a clinical leptospiral isolate (LP2) from this serogroup were analyzed using a battery of 9 monoclonal antibodies, pulsed-field gel electrophoresis (PFGE) and arbitrarily primed polymerase chain reaction (AP-PCR). Monoclonal antibody analysis provided taxonomic results which were in agreement with the current classification of the serogroup Pomona into six serovars and allowed the classification of the isolate LP2 in the serovar pomona. PFGE and AP-PCR, although in general agreement with monoclonal antibody analysis, also were able to demonstrate some differences in the restriction patterns of strains Pomona, Monjakov and CB. These results indicate that these strains, grouped within serovar pomona after the introduction of bacterial restriction endonuclease analysis as the typing method, but formerly described as representing separate serovars (pomona, monjakov and cornelli, respectively), are similar but not identical to one another. This was also the case with strains 5621, the serovar mozdok reference strain, and K1, formerly described as serovar dania reference strain, but currently recognized to be a mozdok-like strain. These findings suggest that the deletion of some serovars within the serogroup Pomona, namely mozdok, cornelli, and dania, should be reconsidered. Thus, PFGE appears to be a useful tool for the serovar identification of leptospires belonging to the serogroup Pomona and for shedding light on the problem of their classification.

The aim of this study was to characterize a Bartonella strain (BA-1) isolated from a blood culture of an Italian, human immunodeficiency virus-positive patient with bacillary angiomatosis. We analyzed the isolate using molecular biology methods such as whole-cell fatty acid analysis, PCR-restriction fragment length polymorphism analysis, type-specific 16S rRNA PCRs, sequence analysis of the 16S rRNA, pulsed-field gel electrophoresis, and arbitrarily primed PCR. The BA-1 isolate turned out to be a Bartonella quintana strain, similar but not identical to B. quintana Oklahoma, which was used as a control strain.

Since the National Centre for Leptospirosis (Department of Bacteriology and Medical Mycology, Istituto Superiore di Sanità, Rome) was established in 1956 by B. Babudieri, efforts have been devoted to identifying new Leptospira isolates and maintaining a collection of strains that today comprises 670 strains, 550 of which have been totally or partially classified, and 120 are still under study. This collection includes 23 serogroups and 156 serovars of pathogenic leptospires, and 32 serogroups and 54 serovars of saprophytic leptospires. The conventional serogroup and serovar identification, mainly based on antigenic relatedness, is tedious and time-consuming, requiring the maintenance of a comprehensive collection of serovar reference strains and the preparation of the corresponding rabbit antisera. Although considerable difficulties are encountered in the classification of leptospires at the serogroup and serovar level, this classification system is essential to obtain information on the epidemiology of leptospirosis in the different geographical areas. Serovar identification has become faster with the introduction of pulsed-field gel electrophoresis (PFGE) of large DNA fragments obtained after digestion of leptospiral DNAs with rare-cutting restriction enzymes. This technique has been successfully utilized to discriminate between closely related serovars of the Leptospira interrogans complex. We have recently used PFGE to characterize several Italian leptospiral isolates, confirming that PFGE analysis combined with microscopic agglutination test (MAT) with monoclonal and polyclonal antibodies can be used as an accurate and reliable method to compare and classify leptospires.

Serum samples from 313 sheep and 95 goats were collected during November 1993 in 26 localities in Alto Adige-South Tyrol and tested by microscopic agglutination test for antibodies to 28 serovars of the genus Leptospira. At the time of blood collection all the animals appeared healthy with no clinical sign suggestive of leptospirosis. The observed seroprevalence in sheep was 6.1%, whereas the seropositivity rate for goat serum samples was 2.1%. The highest serological prevalence in sheep was recorded for serovar castellonis, followed by poi, sejroe, hardjo subtype hardjobovis, copenhageni, and cynopteri. Titres to poi were the only ones found in goats. These findings, which are proof of Leptospira infection in Alto Adige-South Tyrol, indicate that foci of several serovars exist in this region.

In the three-year period 1994 1996, 222 reports on human cases of leptospirosis were received by the Italian Ministry of Health. The average annual number of reports was 29.2% lower than in the preceding eight years. In all cases but two the infections were thought to have been acquired in Italy. As in previous years, the majority of cases was observed in the northern regions of the country (83.8%), mostly in males (88.9%). Cases occurred in all age groups, but were more common in the working-age population (15-64 years). There was no common-source outbreaks. The typical leptospiral seasonal course, with a peak in August, was observed. During 1994, leptospirosis was the reported cause of death in 19 patients. Mortality was higher among males than females. The overall fatality rate was 22.6%. During the study period, a total of 126 cases of leptospirosis were confirmed by the National Centre for Leptospirosis or one of the 12 Regional Leptospira Laboratories. Of the 103 patients for whom information on place of residence, contact with animals, occupational and recreational activities was available, 98 (95.1%) were people who live in rural areas or devote themselves to occupational or recreational activities at risk. The likely source of infection and the mode of exposure were known for 55 patients. Forty-five patients (81.8%) were likely infected by contaminating water (43 cases) or soil (2 cases), ten (18.2%) by direct contact with animals or animal urine. Both running (51.2%) and stagnant water (27.9%) have been reported as a source of infection. Rodents were implicated in 50.0% of the 10 cases involving animals. In comparison with the preceding eight-year period, the risk of contracting leptospirosis was found to have increased for recreational activities (from 34.7 to 38.2%) and decreased for occupational activities (from 45.8 to 32.7%). A large number of infections, however, was ascribed to accidental events (25.5%). As in the previous period, besides fever, the involvement of the liver was the most frequent clinical manifestation (70.8%). Influenza-like symptoms were the only signs of illness in 15.1% of cases. Infections by 9 different serogroups were detected. The most frequent antibodies were those against serovars icterohaemorrhagiae, poi, copenhageni and brattislava. The presence of co-agglutinins against serovars belonging to different serogroups prevented the identification of the presumptive infecting serogroup in 19.8% of subjects.

This paper is a brief review of the epidemiology of Lyme disease in Italy. The first case of the illness was identified by Crovato in Liguria in 1983. In the following years, many other cases have been reported from all Italian regions with the exception of Valle d'Aosta, Basilicata and Calabria. The exact number of cases in our country is not known because Lyme disease was not a notifiable disease until 1990, but on the basis of literature data, at least 1324 cases have been observed in the fourteen-year period 1983-1996. Friuli-Venezia Giulia, Veneto and Trentino-Alto Adige are the main regions involved. Only few cases of illness have been described in Mid and Southern Italy and in the Islands (6.0%). No reports exist on Lyme disease in animals. There is, however, serological evidence of infection of domestic and wild animals. The causative agent, Borrelia burgdorferi sensu lato, was first isolated from Ixodes ricinus ticks by Cinco in Trieste in 1977. Since then many other strains, belonging to three different genomic species (B. burgdorferi sensu stricto, B. garinii and B. afzelii), have been isolated from humans, reservoir hosts and ticks. Cases were reported for all age-groups, more frequently in females, following the typical seasonal course, with a marked seasonality from spring to autumn, when ticks are more active. Erythema chronicum migrans was the most frequent manifestation of LD. Several studies have been conducted on groups at risk (forest workers, gamekeepers, etc.). In contrast to the high prevalence of antibodies to B. burgdorferi sensu lato in the groups at risk (up to 27.2% for forest workers), the seroprevalence of the healthy population is, in general, lower.

It had been previously shown by the Microbial Adherence Immobilization Assay (MAIA) that Borrelia burgdorferi sensu stricto, type strain B31 was clumped, immobilized and killed in vitro by sensitizing antibodies that activated the classical complement pathway and the complement-killing of live borrelia. In the present study, the target antigens and sensitizing antibodies responsible for the complement-killing of borrelia were investigated, using MAIA as a selective identification tool. It was found that the fractions containing the 31 and 34 kDa outer surface proteins from strain B31 were the unique antigens producing sensitizing antibodies in rabbits that activated the complement-killing of B31. An anti-OspB, but not an anti-OspA, monoclonal antibody did activate the B31 complement-killing in MAIA. From these results, constraints on the effectiveness of OspB and OspA as immunogens for the prevention and control of Lyme borreliosis in humans are discussed.

A Borrelia burgdorferi sensu lato strain isolated from IXodes ricinus ticks in Alto Adige-South Tyrol (Northern Italy) was analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of whole cell proteins, Western immunoblotting analysis (WBA) with polyclonal and monoclonal antibodies, and pulsed-field gel electrophoresis (PFGE). The isolate named BZ6 was identified as belonging to the genospecies B. burgdorferi sensu stricto on the basis of its protein profile and its reactivity with monoclonal and polyclonal antibodies. The PFGE study performed with the two rare-cutting restriction enzymes MluI and SmaI confirmed the SDS-PAGE and WBA characterizations, but showed a genetic diversity between the isolate and two out of the three B. burgdorferi sensu stricto strains used in this study as controls, the American type strain B31 and the locally isolated strain BZ1. No difference in the PFGE patterns between the isolate BZ6 and the Swiss strain IRS was noted. Our findings show the value of PFGE analysis for classifying B. burgdorferi sensu lato isolates and for revealing their genetic diversity, and its usefulness for epidemiological investigations.

A serosurvey for antibodies to Borrelia burgdorferi using an enzyme-linked immunosorbent assay (ELISA) was conducted on sheep, goat and dog serum samples collected in Cordillera Province, Bolivia, in 1992 Sera from 98 sheep, 218 goats and 43 dogs were tested. The observed seroprevalence in sheep and dogs was 0.0%, whereas the seropositivity rate for goat serum samples was 5.0%. Upon analysing 10 positive sera by Western immunoblotting, five reacted against the specific protein antigens and all of them met the criteria for positivity on the basis of immunoglobulin G (IgG) bands, indicating that goats in Cordillera Province were exposed to B. burgdorferi. These findings, which are further proof of the existence of B. burgdorferi infection in Bolivia, indicate the serologic analysis of goats as a suitable tool for Lyme borreliosis surveillance.

A serologic survey for antibodies to Borrelia burgdorferi was conducted on sheep and goat serum samples collected in Alto Adige-South Tyrol, Italy, in 1990. Sera were tested by Indirect Immune Fluorescence Assay (IIFA) and Microbial Adherence Immobilization Assay (MAIA). IIFA and/or MAIA anti-B. burgdorferi antibodies were detected in 14.1% of the 269 sheep and 36.8% of the 133 goats examined. IIFA and MAIA were both positive in 4 out of 38 positive sheep sera (10.5%) and 21 out of 49 positive goat sera (42.8%). These discrepancies suggest that MAIA- and IIFA-detected antibodies do differ from each other. The detection by MAIA of antibodies sensitizing B. burgdorferi to the killing effect of complement seems to be a valid parameter to evaluate the acquired immunity of sheep and goats to B. burgdorferi infections.

Lyme disease is caused by three borrelial species, B. burgdorferi sensu stricto, B. garinii and Borrelia group VS461. In a restricted biotope of the Bolzano province, in the Caldaro community, five clones of two borrelial variants were isolated from Ixodes ricinus ticks. A preliminary serological study showed that the two variants cross-reacted with B. burgdorferi B31 and B. garinii N34 strains, respectively. The isolates were genomically related with strains B31 and N34, respectively, sharing a similar plasmid and restriction fragment length polymorphism profile with these strains. The phenotypic pattern of the Caldaro isolates-namely their protein and antigenic profile-showed infra-subspecific variation compared to related strains B31 and N34 respectively. The observed phenotypic variability between strains isolated from the same biotope and in the same tick host strongly indicated the variability of gene-encoded characters is a constant characteristic of borrelial strains, even when from the same ecological niche.

A seroepidemiological study to determine the prevalence of human Lyme borreliosis and tick-borne relapsing fever was carried out in three communities (Camiri, Boyuibe and Gutierrez) of the Cordillera Province, Santa Cruz Department, south-eastern Bolivia. Anti-B. burgdorferi, anti-B. turicatae and anti-B. parkeri antibodies, tested by the indirect immunofluorescent assay (IFA), were detected in 10.8, 16.1 and 8.2% of the serum samples tested, and confirmed by IFA-ABS in 1.3, 1.3 and 1.0%, respectively. This is the first report of the presence of Lyme borreliosis and tick-borne relapsing fever in Bolivia. For Lyme borreliosis these findings represent a further datum to support its existence in South America.

The sensitivity of the indirect immunofluorescence (IFA) test in Legionella pneumophila infection is said to be maximal when a plyimmunoglobulin conjugate is used. However commercially available non-class-specific fluorescent antisera are not always sensitive enough to detect IgM antibodies as class-specific conjugates do. IFA test's drawback is its inability to detect early stages of infection. We routinely performed the microagglutination (MA) test in order to check the reliability of this test alone in screening diagnostic work for L. pneumophila group 1 infections. The 252 sera tested were from suspected or confirmed legionellosis cases. Five-hundred and thirty sera from healthy-people, 49 sera from patients with serologically confirmed chlamydia, coxiella and mycoplasma pneumonia, and ten sera from patients with Pseudomonas aeruginosa infection were used as controls. There was a good agreement between IFA and MA tests, the MA proving almost as specific as, and in some cases more sensitive than the IFA test. This was particularly evident in early stages of infection. For these reasons, together with its low cost and the ease to perform, it appears that the MA test can be a useful screening test for presumptive cases of legionellosis even on a single serum specimen.

The background prevalence of antibody to Legionella pneumophila group 1 in two groups of healthy population of the areas of Milano and Roma, Italy, was determined by testing single serum specimens from 530 blood donors by indirect immunofluorescence (IFA) test and by microagglutination (MA). The upper limit of normal (ULN) titer was found to be 16 by IFA and 8 by MA. There was little difference in the prevalence of titers in the two geographic regions. Of the 486 subjects from whom data were available titers above the ULN value did not vary significantly with age or sex. Considering the possibility of an equivocal area IFA titers greater than 64 and MA titers greater than 16 in single serum specimens can be considered as presumptive of infection.