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Two siblings aged 5 and 15 years from Connecticut were hospitalized with petechial rash, oral mucositis, and severe thrombocytopenia approximately 10 days after they played with a jar of elemental mercury they found in their home. Before the mercury exposure was disclosed, the siblings were treated with platelet transfusions, intravenous immune globulin (IVIG) for possible immune thrombocytopenic purpura, and antibiotics for possible infectious causes. When their conditions did not improve after 6 days, poison control facilitated further questioning about toxic exposures including mercury, testing for mercury, and chelation with dimercaptosuccinic acid. The older sibling soon recovered, but the younger child required a prolonged hospitalization for severe thrombocytopenia, ultimately receiving repeated doses of IVIG, steroids, and romiplostim, a thrombopoietin receptor agonist. Close collaboration among multiple agencies was required to identify the extent of mercury contamination, evaluate and treat the other family members, and decontaminate the home. These cases demonstrate the importance of ongoing public health outreach to promote early detection of elemental mercury toxicity, and the need to evaluate for environmental exposures when multiple close contacts experience similar signs and symptoms., Competing Interests: All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. No potential conflicts of interest were disclosed.

Background: Powassan virus (POWV) is a tick-transmitted pathogen that may cause severe encephalitis; experimentally, it can be transmitted within just 15 minutes following a tick bite. The deer tick virus subtype of POWV (DTV) is transmitted by the deer tick and is the likely cause of the increase in the number of POWV cases reported in the United States. However, DTV has only been definitively documented in 6 patients by molecular analysis of the virus., Methods: Two patients from Connecticut with encephalitis, who had a recent deer tick bite, were evaluated by the relevant serologic tests to determine if they had been infected with POWV. Evaluation also included molecular testing of an adult deer tick that had been removed from one of the patients., Results: We documented neuroinvasive POWV infection in 2 children from Connecticut. Based on the results of testing the tick removed from case 2, this patient was infected by DTV, representing the 7th reported case and the first documented case of DTV infection in a child. Of note, the duration of the tick bites in both cases was very short., Conclusions: We provide the first clinical and epidemiologic evidence that POWV/DTV can be rapidly transmitted to a human host, that is, within hours of tick attachment, which is distinctive when compared to other deer tick-transmitted infections such as Lyme disease., (© The Author(s) 2020. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.)

Kikuchi disease is a self-limited disorder of unknown etiology characterized by focal painful lymphadenitis, fever, and weight loss that can be mistaken for malignancy. Diagnosis is established by node biopsy. Kikuchi disease is endemic in Asia; 10 cases have been reported in the US to date. We report 3 cases and review other US cases., (Copyright © 2014 Mosby, Inc. All rights reserved.)

Objective: To determine how frequently Connecticut primary care physicians are diagnosing and treating patients with chronic Lyme disease., Study Design: A survey was mailed to a random 33% sample of primary care physicians in Connecticut, which asked how many cases of Lyme disease and chronic Lyme disease they diagnosed and treated in the last 3 years., Results: The survey had a response rate of 39.1%. Physician respondents (n = 285) fit in one of 3 groups. Group 1 included 6 of 285 (2.1%) physicians who diagnose and treat patients with chronic Lyme disease. Group 2 included 137 of 285 (48.1%) physicians who are undecided on the existence of chronic Lyme disease, but did not diagnose or treat any patients with chronic Lyme disease. Group 3 included 142 of 285 (49.8%) physicians who do not believe in the existence of chronic Lyme disease., Conclusion: A small percentage (2.1%) of primary care physicians diagnose and treat patients for presumed chronic Lyme disease., (Copyright © 2010 Mosby, Inc. All rights reserved.)

To determine the incidence and cumulative frequency of Lyme disease in a school-aged population in an area in which Lyme disease is endemic, serum specimens were obtained before and after the 1990-1992 tick seasons from 410 middle and high school students in southeastern Connecticut. Sera were tested for serologic evidence of infection with Borrelia burgdorferi, and students were questioned about physician-confirmed episodes of clinical Lyme disease. At enrollment, 29 (7%) students had a history of Lyme disease, and of these, 12 (41%) were seropositive for B. burgdorferi infection. Seronegative students (397) were followed prospectively over a total of 796 person years. At enrollment, 381 students (93%) had no history of Lyme disease, and of these, 1 (0.3%) was seropositive. During this period, 8 students developed clinical Lyme disease and 3 had asymptomatic infections with B. burgdorferi. The incidences of clinical Lyme disease and asymptomatic B. burgdorferi infection were 10.1 and 3.8 cases/1000 person-years, respectively. Lyme disease is an important health problem in school-aged children living in southeastern Connecticut.

The existence of a form of early Lyme disease characterized by a flu-like illness without erythema migrans is controversial. To confirm the existence and define the clinical characteristics of the flu-like illness without erythema migrans of localized Lyme disease, the authors studied patients from a Lyme disease endemic area of Connecticut who visited their primary care physicians with an undefined flu-like illness. Patients kept a diary of their symptoms. Acute and convalescent sera were obtained. The diagnosis of Lyme disease was based on the appearance of IgM or IgG antibodies to Borrelia burgdorferi as demonstrated by both enzyme-linked immunosorbent assay and immunoblot assay. Twenty-four untreated patients were studied. In five patients acute serologic evidence of Lyme disease developed. The flu-like illness in these five patients was characterized by fever and fatigue and resolved spontaneously in 5 to 21 days. Symptoms recurred in three of these five patients. The existence of a flu-like illness without erythema migrans of early Lyme disease has been clearly established. Prospective, controlled studies are needed to better define its incidence, characteristics, and prognosis so that appropriate diagnostic and therapeutic strategies can be developed.

To determine if antibodies to Borrelia burgdorferi persist after antibiotic treatment, we recalled 32 patients with Lyme disease from a primary care practice a mean of 16 months after treatment and analyzed initial and follow-up serum samples by ELISA and immunoblot assays. Of the eight patients whose initial serum specimens were positive for IgM antibody by ELISA, three had positive titers of IgM antibody at follow-up; of the 23 patients whose initial serum specimens were positive for IgG antibody by ELISA, 19 had positive titers of IgG at follow-up. Of the five patients whose initial serum specimens were positive for IgM antibody by immunoblot, two had positive titers of IgM antibody at follow-up; of the 30 patients whose initial serum specimens were positive for IgG antibody by immunoblot, 29 had positive titers of IgG antibody at follow-up. The bands on the IgG immunoblot remained remarkably constant during the period from analysis of the initial specimen to that of the follow-up specimen. Nine of the 32 patients had persistent or recurrent symptoms, and ELISA and immunoblot were not helpful for identifying these nine patients.

In a large community hospital during a six-month period, 238 of 19,670 hospitalized patients (1.2%) received chloramphenicol. The drug was administered exclusively by the intravenous route in 98% of these patients. In 78% of the patients, chloramphenicol was used for an appropriate indication, whereas in 22%, its use was inappropriate. Serious toxic effects and unexpected clinical failures were not observed.

Home sterilization of infant formula became a standard of well-baby care in the 1940s. Its purpose was to eliminate bacterial pathogens that could contaminate water and bottles. Public water supplies are now rarely contaminated, and studies have confirmed that sterilization is no longer necessary. Connecticut family physicians and Connecticut mothers were polled and it was found that 48 percent of physicians recommend sterilization and that 54 percent of mothers (using public water supplies) sterilize formula. Formula sterilization recommendations by physicians and sterilization practices by mothers need to be updated.