| serological survey for viral diseases in the cayo santiago rhesus macaque population. | the free-ranging population of rhesus monkeys (macaca mulatta) on cayo santiago was sero-surveyed for human measles, simian virus 40, b virus (herpes simiae), rhesus cytomegalovirus, human and simian retroviruses and encephalomyocarditis virus to determine the prevalence of these viruses in the colony. the results of this study indicate that the colony is free of sv40, htlviii (hiv-1), stlviii (siv) and srv1; has a low prevalence of measles and emcv; and high prevalence rates for b virus, cmv an ... | 1989 | 2571176 |
| antibodies to delta antigen in asymptomatic hepatitis b surface antigen-reactive blood donors in the united states and their association with other markers of hepatitis b virus. | a total of 1,915 sera collected in 1979 from asymptomatic hepatitis b surface antigen (hbsag) carriers were tested for delta antigen, antibody to delta antigen (anti-delta), hepatitis b e antigen (hbeag) and antibody to hepatitis b e antigen (anti-hbe) in addition to hbsag and its subtypes. these sera represented blood donated by volunteers to 49 of 57 regions of the american red cross located in nine geographic regions of the united states and puerto rico. a total of 72 (3.8%) sera had anti-del ... | 1985 | 4014206 |
| virtual absence of infection with herpesvirus simiae in colony-reared rhesus monkeys (macaca mulatta), with a literature review on antibody prevalence in natural and laboratory rhesus populations. | | 1972 | 4334438 |
| prevalence of hepatitis b, hepatitis c, and human immunodeficiency virus infection among women attending prenatal clinics in san juan, puerto rico, from 1989-1990. | to evaluate the prevalence of hepatitis b virus (hbv), hepatitis c virus (hcv), and human immunodeficiency virus (hiv) among pregnant women in puerto rico. | 1995 | 7528370 |
| b-virus and free-ranging macaques, puerto rico. | in puerto rico, risk for transmission of b-virus from free-ranging rhesus monkeys to humans has become a serious challenge. an incident with an injured rhesus monkey, seropositive for b-virus, resulted in inappropriate administration of antiviral postexposure prophylaxis. this incident underscores the importance of education about risks associated with interactions between humans and nonhuman primates. | 2004 | 15109420 |
| seroprevalence of hepatitis c virus and associated risk behaviours: a population-based study in san juan, puerto rico. | limited information about the epidemiology of hepatitis c virus (hcv) infection is available in puerto rico, one of the areas hardest hit by the human immunodeficiency virus/acquired immune deficiency syndrome (hiv/aids) epidemic. we estimated the prevalence of hcv infection and identified correlates of seropositivity in the municipality of san juan, puerto rico. | 2005 | 15802378 |
| hepatocellular carcinoma: ten years experience among veterans in puerto rico. | the aim of our study is to determine the characteristics of hepatocellular carcinoma (hcc) as well as risk factors, demographics, survival rates and the use of diagnostic and therapeutic modalities among veteran patients in puerto rico. | 2007 | 17722422 |
| hepatitis b immune status of non-injecting drugusers 18- to 25-years-old in puerto rico. | ilicit drug users are the population group at highest risk of hbv infection in most western countries. in this study we assessed hepatitis b virus (hbv) immune status in a cohort of young non-injecting drug users in puerto rico. | 2006 | 19610554 |
| hiv-related risk behaviors among a sample of men who have sex with men in puerto rico: an overview of substance use and sexual practices. | despite the growing impact of the human immunodeficiency virus (hiv) epidemic in puerto rico (pr), limited epidemiological research on men who have sex with men (msm) has been conducted. the aim of this study was to describe hiv-related risk behaviors in a sample of msm in pr. | 2011 | 21682148 |
| herpes b-virus seroreactivity in a colony of macaca mulatta: data from the sabana seca field station, a new specific pathogen-free program. | the demand for b-virus-free animals for biomedical research is increasing, while at the same time the availability of such animals is decreasing. the establishment of specific pathogen-free (spf) breeding macaque colonies is a priority of the national institutes of health. nevertheless, it is well known that seroreactivity to b-virus can be difficult to interpret, particularly as it can vary over time in a single animal. the aim of the present study was to implement a reliable algorithm to exami ... | 2005 | 15667339 |
| sequence analysis of the v1-v2 hypervariable region of the hiv-1 envelope gene from pediatric patients. | the presence of hiv-1 dna sequence variants of pediatric aids patients was investigated in a two-stage polymerase chain reaction (pcr) using nested primers for the first and second (v1-v2) hypervariable regions of the proviral envelope (gp 120) gene (env1). gel electrophoresis analysis yielded amplified dna bands which exhibited length variations which were characteristic for each child. the pcr products were cloned and the resulting clones demonstrated inserts of different lengths in a patient ... | 1996 | 8994287 |
| seroprevalence of b virus (herpesvirus simiae) antibodies in a naturally formed group of rhesus macaques. | eighty-two percent of a group of rhesus monkeys removed from cayo santiago were seropositive for b virus (herpesvirus simiae) antibodies. similar results were obtained from the cayo santiago macaque population two decades ago and from feral indian rhesus monkeys. thus it is likely that b virus has been enzootic in the cayo santiago population since 1938, when the colony was established with stock imported from india. | 1990 | 2160017 |
| the genetic diversity and evolution of hiv-1 subtype b epidemic in puerto rico. | hiv-1 epidemics in caribbean countries, including puerto rico, have been reported to be almost exclusively associated with the subtype b virus (hiv-1b). however, while hiv infections associated with other clades have been only sporadically reported, no organized data exist to accurately assess the prevalence of non-subtype b hiv-1 infection. we analyzed the nucleotide sequence data of the hiv pol gene associated with hiv isolates from puerto rican patients. the sequences (n = 945) were obtained ... | 2015 | 26703695 |