Coronavirus disease (COVID-19) - World Health Organization (WHO)
Dec 5, 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 …
WHO prequalifies first maternal respiratory syncytial virus vaccine
On 12 March 2025, the World Health Organization (WHO) prequalified the first maternal respiratory syncytial virus (RSV) vaccine to protect infants against one of the most common …
Chikungunya epidemiology update - June 2025
Jun 11, 2025 · Chikungunya virus (CHIKV) is a mosquito-borne virus primarily transmitted by Aedes mosquitoes. It causes acute illness characterized by fever, rash, and debilitating joint …
WHO Scientific advisory group issues report on origins of COVID-19
Jun 27, 2025 · The WHO Scientific Advisory Group for the Origins of Novel Pathogens (SAGO), a panel of 27 independent, international, multidisciplinary experts, today published its report on …
Recommendations announced for influenza vaccine composition …
Sep 26, 2025 · The World Health Organization (WHO) today announced its recommendations for the viral composition of influenza vaccines for use in the 2026 influenza season in the …
Nuevo coronavirus 2019 - World Health Organization (WHO)
En este sitio web se puede encontrar información y orientaciones de la OMS acerca del actual brote de enfermedad por coronavirus (COVID-19) que fue notificado por primera vez en …
Human metapneumovirus (hMPV) infection
Jan 10, 2025 · Human metapneumovirus (hMPV) is one of the viruses that causes the common cold (upper respiratory infection). It usually makes people only mildly sick, but it can make …
COVID-19 still causes severe disease, but up-to-date vaccines are ...
Dec 31, 2025 · Moreover, the impact of the virus seems to still be as severe, and sometimes more severe, than influenza,” noted Dr Mark Katz, a medical epidemiologist with the Pandemic …
Marburg virus disease - World Health Organization (WHO)
Jun 8, 2023 · Marburg virus disease (MVD) is a severe disease with a fatality ratio of up to 88%. This rate can be lower with good and early patient care. MVD was initially detected in 1967 …
Coronavirus disease (COVID-19)
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.