Adult prevalence of diagnosed infectious diseases by country 2019

It is estimated that around nine percent of the population in the United States has been diagnosed with an infectious disease. Infectious diseases are caused by bacteria, viruses and other organisms and can be spread from person to person, through insect or animal bites, or through contaminated food or water. Some of the most common infectious diseases include HIV/AIDS, influenza, malaria, tuberculosis and hepatitis.


HIV/AIDS is one of the most well-known infectious diseases worldwide. There are currently almost 38 million people worldwide living with HIV and it is responsible for just under a million deaths per year. HIV treatment has improved dramatically over the last few decades but access to treatment varies. The poorer regions of the world still suffer disproportionately from HIV with the majority of those infected living in Africa.


Like HIV/AIDS, tuberculosis also impacts the poorer regions of the world more than developed nations. Tuberculosis impacts the lungs of those infected and is currently the tenth leading cause of death worldwide. The countries with the highest incidence rates of tuberculosis include India, China, Indonesia, and the Philippines. In India alone tuberculosis was responsible for around 440,000 deaths in 2018.

Prevalence of diagnosed infectious diseases in selected countries as of 2019

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Release date

October 2019



Survey time period

as of 2019

Number of respondents

249,008 respondents

Age group

18 years and older

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