Brucella infection in HIV infected patients.

The purpose of this study was to assess the possible correlation between Brucella and HIV infections. Iran is a country where HIV infection is expanding and Brucellosis is prevalent. In the present study, 184 HIV infected patients were assigned and for all of them HIV infection was confirmed by western blot test. In order to identify the prevalence rate of Brucella infection and systemic brucellosis in these subjects, sera samples were obtained and Brucella specific serological tests were performed to reveal antibody titers. Detailed history was taken and physical examination was carried out for all of patients. 11 (6%) subjects had high titers but only 3 of them were symptomatic. Most of these subjects were injection drug user (IDU) men and one was a rural woman. Considering both prevalence rates of Brucella infection (3%) and symptomatic brucellosis (0.1%) in Iran, our HIV positive patients show higher rates of Brucella infection and systemic brucellosis. Preserved cellular immunity of participants and retention of granulocytes activity may explain this poor association; whereas other explanations such as immunological state difference and non-overlapping geographical distribution of the 2 pathogens have been mentioned by various authors.

High prevalence of chronic hepatitis B infection among injection drug users in Iran: the need to increase vaccination of adults at risk.

We measured the prevalence of HBV surface antigen (HBsAg) among male injection drug users (IDUs) in Detention, Tehran, Iran. A cross-sectional survey included 499 male IDUs arrested by police during a predetermined police sweep in Tehran (February, 2006). A questionnaire was filled out for each individual. Blood specimens were collected for HBsAg testing. Prevalence of HBsAg was 5.8% (95% CI 3.6-7.9). The majority of chronic HBV infections, 69.2%, were among adults age 25 to 34 years. The high prevalence of HBsAg highlights the need for special efforts to increase vaccination among adult populations at risk for HBV infection in order to reducing continuing transmission and stave off future high burden of disease.

Electroretinogram in amblyopic and non-amblyopic children.

Amblyopia is a common visual impairment in developing countries and a major but neglected health issue. Definite diagnosis in children is difficult due to lower cooperation in this age range. Electroretinography (ERG) may be a useful objective method for diagnosis of amblyopia. In this study, we compare the ERG findings in amblyopic and non-amblyopic children. It is concluded that ERG is a sensitive and objective diagnostic test for amblyopia. It is recommended that ERG be used as a quick tool for diagnosis of amblyopia in children.

HIV seroconversion among injection drug users in detention, Tehran, Iran.

Jails may foster the spread of HIV, particularly among drug users. In 2006, male injection drug users (n = 499) detained in Tehran consented to HIV testing at intake and discharge. HIV prevalence at intake was 24.4%. Nine of those who were HIV negative at intake were positive at discharge (annualized incidence rate 16.8%), including one p24 antigen positive. Jails may be contributing to the rapid spread of HIV in Iran and should be major points for prevention interventions.