• More than 1.1 million people in the United States are living with HIV infection, and almost 1 in 6 (15.8%) are unaware of their infection.
• Gay, bisexual, and other men who have sex with men (MSM^a), particularly young black/African American MSM, are most seriously affected by HIV.
• By race, blacks/African Americans face the most severe burden of HIV.
• CDC estimates that approximately 50,000 people in the United States are newly infected with HIV each year. In 2010 (the most recent year that data are available), there were an estimated 47,500 new HIV infections.^a Nearly two thirds of these new infections occurred in gay and bisexual men. Black/African American men and women were also highly affected and were estimated to have an HIV incidence rate that was almost 8 times as high as the incidence rate among whites.

How common is acute Hepatitis C in the United States?

In 2009, there were an estimated 16,000 acute Hepatitis C virus infections reported in the United States.

How common is chronic Hepatitis C in the United States?

An estimated 3.2 million persons in the United States have chronic Hepatitis C virus infection. Most people do not know they are infected because they don’t look or feel sick.

How likely is it that acute Hepatitis C will become chronic?

Approximately 75%–85% of people who become infected with Hepatitis C virus develop chronic infection.

One in one hundred Americans has Hepatitis C: Reuters reported in March of 2014 that a CDC analysis of National Health and Nutrition Examination Survey (NHANES) data from 2003–2010 indicated that 1 percent of Americans (2.7 million) older than 6 had chronic hepatitis C virus (HCV) infections that could damage their livers severely with time.