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Biomedical subjects

H Zealley

Publications and source records attributed to H Zealley.

8 recordsLinked to original sources

Down's syndrome in the Lothian region of Scotland--1978 to 1989.

A study of Down's syndrome in Lothian for the years 1978-1989 revealed a significantly higher than expected incidence of cases in 1987. The increased incidence was particularly significant among women aged 35 years or more. The increase could not be attributed to demographic changes on birth rates or to the age distribution of the women concerned. A temporal association between the cluster of cases and the events at Chernobyl in April 1986 was demonstrated. However, according to current understanding, there is no biologically plausible explanation to link the 2 events, given the reported levels of radioactive fallout in the Lothian region, resulting from the Chernobyl disaster. An explanation for the increased incidence of Down's syndrome in 1987 remains outstanding.

Abnormalities, Radiation-Induced

A comparison of the reactivity and immunogenicity of RA 27/3 strain rubella vaccine prepared in WI-38 or MRC5 human diploid cells.

The immunogenicity and clinical reactivity of rubella vaccine derived from WI-38 or MRC5 human diploid cells was compared in 125 seronegative adolescent females. Seroconversion rates, assessed by single radial haemolysis testing of paired pre- and post-vaccination samples exceeded 98% (56/57 and 68/68 vaccinees, respectively) for both vaccines. Quantitative assessment of rubella-specific antibodies in 53 post-vaccination sera by an ELISA technique also failed to reveal any difference in immunogenicity between the vaccines. Assessable calendar records documenting the occurrence of local and systemic signs and symptoms in the four weeks following vaccination were returned by 106 subjects. No important statistically significant difference in parameters of clinical reactivity between the vaccine groups was observed although the incidence of pain at the injection site was found to be significantly higher for vaccinees receiving WI-38 derived vaccine.

Adult

The impact of a rubella prevention policy on the outcome of rubella in pregnancy.

Surveillance of rubella vaccination in schoolgirls has continued intensively in Edinburgh since 1970. Screening for rubella antibody of all women attending antenatal clinics has been available since 1974. The analysis of cases of rubella occurring in pregnancy during an outbreak in 1979 confirmed the efficacy of schoolgirl vaccination in the city but indicated poor implementation of postnatal vaccination. Eighteen (67%) of 27 proven cases occurred in women who were screened in previous pregnancies and not immunized. Of the total of 13 liveborn infants the only two with congenital rubella defects were born to mothers in this group. Rubella immunization of schoolgirls and women of childbearing age must receive continued intensive effort if the problems of rubella in pregnancy are to be eradicated.

Adolescent