Subpopulation differentials in STD transmission.

HPV vaccine implementation in STD clinics--STD Surveillance Network.

We surveyed selected public sexually transmitted disease clinics in the United States regarding human papillomavirus vaccine availability, target populations, funding sources, and barriers. Although nearly all had experience offering other vaccines, only 7 of 42 clinics (17%) offered human papillomavirus vaccine. Vaccine cost, staff time, and follow-up issues were commonly reported barriers.

Organismal Differentials and Organ Differentials.

Vaccine candidates in STD.

Sexually transmitted diseases (STDs) are caused by organisms that infect the mucosal surfaces of the genitourinary tract. In spite of its public health importance, particular scientific problems have delayed the development of an STD vaccine, such as incomplete attenuation (human herpes simplex virus type 2), accentuated immunopathology (Chlamydia trachomatis), poor immunogenicity (Treponema pa...

Estimation of Subpopulation Parameters in One-stage Cluster Sampling Design

Sometimes in order to estimate population parameters such as mean and total values, we extract a random sample by cluster sampling method, and after completing sampling, we are interested in using the same sample to estimate the desired parameters in a subset of the population, which is said subpopulation. In this paper, we try to estimate subpopulation parameters in different cases when one-st...

Gender differentials of pulmonary tuberculosis transmission and reactivation in an endemic area.

BACKGROUND In most low income countries there are twice as many cases of tuberculosis (TB) reported among men than among women, a difference commonly attributed to biological and epidemiological characteristics as well as socioeconomic and cultural barriers in access to health care. The World Health Organization has encouraged gender specific comparisons in TB rates to determine whether women w...