Related Experiment Video
Updated: May 9, 2026
13:58
Amplifying and Quantifying HIV-1 RNA in HIV Infected Individuals with Viral Loads Below the Limit of Detection by Standard Clinical Assays
Published on: September 26, 2011
HIV incidence from the first population-based cohort study in India
BMC Infectious Diseases
|July 20, 2013
Summary
New HIV infections are higher in rural areas of India. Targeting spouses of HIV-positive individuals and specific risk groups is crucial for effective HIV prevention programs.
Area of Science:
- Epidemiology
- Public Health
- Infectious Diseases
Background:
- Understanding HIV transmission dynamics is key to controlling the epidemic.
- Population-based studies are essential for identifying infection patterns and risk factors.
Purpose of the Study:
- To assess HIV incidence and its determinants in a high HIV burden district in Andhra Pradesh, India.
- To provide population-based longitudinal data on HIV acquisition.
Main Methods:
- A cohort of 12,617 adults in Guntur district was re-surveyed between 2004-2005 and 2010-2011.
- Interviews assessed risk behaviors, and HIV testing was conducted.
- Multiple logistic regression analyzed associations with HIV incidence.
Main Results:
- HIV incidence was 1.26 per 1000 person-years.
- Incidence was higher in rural men (1.68) and women (1.28) compared to urban counterparts.
- A HIV-positive spouse at baseline was the strongest predictor (OR 266 for men, OR 28 for women).
Conclusions:
- Rural areas in high HIV burden states require intensified prevention efforts.
- Targeting spouses of HIV-positive individuals and other identified risk groups is vital for effective HIV prevention programs.
Related Concept Videos
01:29Bias in Epidemiological Studies
Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:
01:08Prevalence and Incidence
In statistical epidemiology and health sciences, two essential metrics—prevalence and incidence—are fundamental for understanding disease dynamics within a population. These measures enable public health officials, epidemiologists, and researchers to assess the burden of diseases, allocate resources effectively, and design impactful public health policies and interventions.
Prevalence indicates the proportion of individuals in a population who have a specific disease or health condition at a...
Prevalence indicates the proportion of individuals in a population who have a specific disease or health condition at a...
01:28Viral Hepatitis I: Introduction
Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...
01:26Introduction to Epidemiology
Epidemiology, known as the cornerstone of public health, involves studying the distribution and determinants of health-related events in defined populations and applying these insights to control health issues. This is essential for understanding how diseases spread, identifying populations at greater risk, and implementing measures to control or prevent outbreaks. Epidemiology addresses not only infectious diseases but also non-communicable conditions like cancer and cardiovascular disease,...
01:28Infectious Diseases and Their Occurrence
Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
01:10Retrovirus Life Cycles
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...