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Biomedical subjects

Z Jezek

Publications and source records attributed to Z Jezek.

13 recordsLinked to original sources

Acquired immunodeficiency syndrome in Romania.

After the initial description of acquired immunodeficiency syndrome (AIDS) in Romania in late 1989, national AIDS case surveillance was established with a modified version of the World Health Organisation (WHO) clinical case definition. This modified case definition requires that AIDS cases have both clinical and serological evidence of human immunodeficiency virus (HIV) infection. Before December, 1989, Romania had reported 13 AIDS cases to WHO. By Dec 31, 1990, 1168 AIDS cases were reported to Romania's Ministry of Health, of which 1094 (93.7%) occurred in children less than 13 years of age at diagnosis. Of these, 1086 (99.3%) were in infants and children less than 4 years of age, and 683 (62.4%) in abandoned children living in public institutions at the time of diagnosis. By Dec 31, 1990, 493 (45.1%) mothers of children with AIDS had been located and tested, and 37 (7.5%) were positive for HIV; 423 (38.7%) cases were in children who had received transfusions of unscreened blood, and 6 (0.5%) were in children with clotting disorders. HIV transmission through the improper use of needles and syringes is strongly suspected in most of the remaining 628 (57.4%) children with AIDS, most of whom had received multiple therapeutic injections. This outbreak demonstrates the serious potential for HIV transmission in medical facilities that intensively and improperly use parenteral therapy and have poor sterilisation technique.

Acquired Immunodeficiency Syndrome

Immunological surveys of antibodies against B. pertussis and B. parapertussis in some African and Asian countries.

Immunological surveys in African and Asian countries showed a different degree of herd immunity in the respective countries and the circulation of various types of B. pertussis. Antibodies against B. parapertussis, the second aertiological agent of whooping cough, were found in all countries in all age groups. Before planning any vaccination program, attention should be paid to the vaccine concerning the content of all types of B. pertussis, as was shown in the results of the testing of different vaccines used in Mongolia and Algeria. It is also possible to estimate the age limit for vaccination and thus economic use of the vaccine. The contemporary state of reporting whooping cough cases is very unsatisfactory.

Adolescent

Common-source epidemic of hepatitis due to glazed and iced pastries.

Sixty-one clinical cases of hepatitis occurred in Ogemaw County, Michigan, in late April and May 1968. The clustering of cases in time and the high attack rate for persons 10-19 years of age suggested a common source of exposure. Investigation implicated a local bakery, where one of the employees directly involved in the baking had had an icteric illness one month before the outbreak. Comparison of exposure histories of patients versus healthy family members established pastries covered with glaze or icing as the vehicle of infection. The glaze and icing were applied to the pastries after all baking had been completed. During the epidemic, immune serum globulin was given on a community-wide basis. No secondary cases of hepatitis were identified.

Adolescent

Immunization interview survey in the Mongolian People's Republic.

An immunization interview survey was carried out in the urban and rural areas of Mongolia. The population sample interrogated comprised 1359 households with 6994 household members, 3634 of them younger than 15 years. The data collection unit was a private household, where information on administrative, demographic and socio-economic items was obtained in addition to detailed information on vaccination histories. A fair number of individuals with a positive history was found among children aged 1 to 5 years; the highest rates were determined among preschool and school-children aged 5 to 9. Significant differences in vaccination rates were found between urban and rural dwellers, urban areas displaying a higher proportion of vaccinated children in the younger age groups and rural areas among school-age children. A significantly higher proportion of vaccinated individuals was found among children living in somons than those living in aimac centres. No significant differences were found between children attending child collective institutions and those educated solely at home. The immunization interview survey was specially directed toward obtaining an estimate of the vaccinated population segment with reference to age in demarcated areas and thus detecting "weak spots" requiring remedial action.

Adolescent