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Unedited trans. of Sudostroenie (Shipbuilding) (USSR) n6 p22-25 1977, by A. K. Henn.

The investigations and analysis of data allow us to conclude that a Crimean hemorrhagic fever focus exists in Rostov region. It is associated with the northeastern slopes of the Donets ridge and the Severny Donets floodplains. The Crimean hemorrhagic fever focus borders continue to expand. The most effective prophylactic measures against Crimean hemorrhagic fever are: (a) Personal prophylactic measures, preventing tick bites of humans and Crimean hemorrhagic fever virus infiltration by other means, and increased sanitary training among the population. (b) Systematic continuous acaricide chemical treatment of cattle against tick infestation should be carried out by the veterinary service during April to August. (c) Maintenance of a sanitary-epidemiological routine in medical institutions to prevent the infection inside them. (Author)

Between May and July 1963, cases of CHF were recorded for the first time in Rostov Oblast. Most of the cases of illness were associated with tickbite or squashing of adult ticks of the species Hyalomma plumbeum plumbeum. Of the 12 patients: 9 were milkmaids, 2 workers on a dairy farm, a physician (infected in the hospital), and one 6 year old child. Questioning of 101 milkmaids who worked with persons that became ill, showed that 74 of them removed attached as well as unattached ticks from themselves. Attack by most ticks occurred during milking cows. In turn, ticks attacked cows while the herds grazed in ravines overgrown with shrubs and weeds. (Author), Trans. of mono. Kleshchevoi Entsefalit, Kemerovskaya Kleshshevaya Likhoratka, Gemorragicheskie Likhoratki i Drugie Arbovirusnie Infekstsii, Moscow, 1964 p282-3.

The vector of CHF in Astrakhan Oblast, as in Crimea, proved to be Hyalomma pl. plumbeum Panz. ticks. The most important role in feeding immature stages of this tick belongs to rooks. Rooks are very numerous in regions with CHF incidence in Astrakhan Oblast. This fact is not characteristic of CHF foci in Crimea. In addition to rooks, 20 other bird species, as well as hares, also participate in maintaining larval and nymphal ticks in Astrakhan Oblast. Adult Hyalomma ticks feed mainly on domestic cattle. Study of seasonal dynamics of numbers and attacks by ticks were conducted in a natural focus, close to rook settlements. Ecological problems of the CHF vector require further investigations. (Author), Trans. of Akademiya Meditsinskikh Nauk SSSR. Institut Poliomielita Virusnykh Enfsefalitov. Trudy, n7 p288-95 1965.