Sep 29, 2025 · Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and …

Jan 20, 2025 · WHO fact sheet on Marburg haemorrhagic fever provides information on transmission, signs and symptoms, diagnosis, prevention and WHO response.

Nov 27, 2025 · WHO fact sheet on COVID-19, including information on symptoms, transmission, treatment, prevention, vaccines and and WHO's work in this area.

Apr 24, 2025 · The virus can get into the human population when people have close contact with the blood, secretions, organs or other bodily fluids of infected animals such as fruit bats, chimpanzees, …

WHO provides the latest disease outbreak news, offering information on confirmed public health emergencies or events of potential concern.

Jul 15, 2025 · WHO fact sheet on HIV and AIDS with key facts and information on signs and symptoms, transmission, risk factors, testing and counselling, prevention, treatment and WHO response.

Information on COVID-19, the infectious disease caused by the most recently discovered coronavirus.

Apr 14, 2025 · Chikungunya: WHO fact sheet on Chikungunya providing key facts and information on scope of the problem, who is at risk, prevention, WHO response.

Jul 14, 2022 · Zika virus is primarily transmitted by the bite of an infected mosquito from the Aedes genus, mainly Aedes aegypti, in tropical and subtropical regions. Aedes mosquitoes usually bite …

•This new virus and disease were unknown before the outbreak began in Wuhan, China, in December 2019 •COVID-19 is now a pandemic affecting many countries globally