HIV is a retrovirus that impairs the immune system and causes AIDS. Learn about symptoms and treatment.
COVID-19 is the disease caused by the SARS-CoV-2, the 2019 novel coronavirus.
Sexually transmitted infections are caused by bacteria, viruses, and parasites that can spread through sexual contact.
Long COVID refers to new or recurring symptoms that occur four or more weeks after an infection with SARS-CoV-2, the virus that causes COVID-19.
Sepsis is a condition caused by an overwhelming immune response to an infection in the body. Learn about symptoms and treatment.
Coronavirus is a term describes a family of viruses, common in both animals and humans.
Pneumonia is an infection that inflames air sacs, which may fill with fluid, in the lungs. Learn about symptoms and treatment.
Most microbes in and around our bodies are harmless, but some evolve to become deadly threats to individual and public health.
Tuberculosis is highly contagious and can be deadly. Learn about symptoms and treatment.
Urinary tract infections are bacterial infections that occur in the urinary tract. Learn about symptoms and treatment.