PubMed Health⌕ Search

Biomedical subjects

J S Koopman

Publications and source records attributed to J S Koopman.

59 records · Page 4Linked to original sources
PubMed1975

Neonatal risk following late gestational genital herpesvirus hominis infection.

Five women developed genital herpesvirus hominis (herpes simplex virus) infection beyond 32 week's gestation. Two of the women had fresh vesicular lesions at parturition. The five infants were delivered per vaginum at term and escaped subsequent overt herpesvirus hominis infection, although a scalp lesion in one infant was dismissed as inconsequential and disappeared without virologic study. Examination of the infants two months to four years after birth failed to detect sequelae of possible subclinical infection.

Child, Preschool↗
PubMed1975

The role of cutaneous diphtheria infections in a diphtheria epidemic.

Twenty-four people with diptheria and 48 carriers were found in an isolated, circumscribed, rural area during a one-month period. Four patients had cutaneous lesions, which were similar to those of typical impetigo, form which Corynebacterium diptheriae was isolated. These cases constituted an epidemiologic focus from which the other cases were infected. Ten of 52 classroom contacts of two patients with skin infections harbored C. diphtheriae in the pharynx, while only eight of 132 classroom contacts of eight respiratory cases were similarly infected. Respiratory carriage of C. diphtheriae in five of 12 Head start classroom contacts of another patient with cutaneous infection with C. diptheriae in the classroom situation. A tendency toward greater environmental contamination by cutaneous diphtheria than by respiratory diptheria might be related to the greater contagiousness cases.

Adolescent↗
PubMedDate not supplied

Heterosexual partnership characteristics of university women.

In order to assess the individual risk of acquiring sexually transmitted diseases (STDs), both characteristics of the partnership and the individual should be considered. Partnership characteristics have been used as risk markers for STD transmission but their distribution has not been well described. Using a self-administered questionnaire, we collected information on the partnership characteristics of the 4 most recent sexual partners of the members of 9 university women's social organizations at the University of Michigan. Respondents were asked to report the setting of the first meeting of partners, the length of the presexual relationship, condom use at the first sexual encounter and the total number of sexual encounters within that partnership. We graphically analyse changes in these partnership characteristics with respect to partnership order. As the number of sexual partners increased the women in this population were more likely to report partnership characteristics associated with an increased risk of acquiring an STD. In addition, partnership characteristics varied with the order of the partnership, implying that no single partnership is representative of all others.

Adult↗
PubMedDate not supplied

[Procedures for estimating transmission parameters from influenza epidemics: use of serological data].

A maximum likelihood procedure is given for estimating household and community transmission parameters from observed influenza infection data. The mathematical model used does not require the specification of infection onset times and, therefore, can be used with serological data which detect asymptomatic infections. Infection data was derived by serology and virus isolation from the Tecumseh Respiratory Illness Study and the Seattle Flu Study for the years 1975-1979. Influenza A (H1N1), A (H3N2), and B viruses were found to be in descending order both in terms of ease of spread in the household and intensity of the epidemic in the community except when two strains co-circulate. Children are found to be the main introducers of influenza into households.

Adult↗