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About **** out of 100,000 people in China registered to have AIDS (acquired immune deficiency syndrome) in 2020. The increasing number of AIDS cases in China can be attributed mostly to intravenous drug use, prostitution, and blood donations. AIDS is caused by infection with the human immunodeficiency virus (HIV).

Global HIV/AIDS epidemic

Globally, the number of new HIV infections declined significantly over the last decade. According to the estimation from UNAIDS, the virus had infected about *** percent of the total adult population aged between 15 and 49 years in 2021. That year, there were *** thousand AIDS-related deaths worldwide. Most death cases were registered in African countries, whereas around ** percent were registered in the Asia and Pacific region.

Sexually transmitted infections in China

In China, AIDS ranked eleventh in terms of incidence rate of infectious diseases. However, it remained the deadliest in the group, causing nearly ** thousand deaths in 2020. Compared to other sexually transmitted infections (STI), AIDS had the lowest incidence rate. Hepatitis B had the highest rate of new cases – about out of 100,000 people, followed by syphilis and gonorrhea. It is worth noting that the official data of STI are commonly lower than the actual figures. Lack of STI testing knowledge, low income, and social stigmatization are the main reasons why some patients do not seek medical help when they contract an STI.