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 …

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 …

Oct 3, 2025 · Chikungunya is a mosquito-borne viral disease caused by the CHIKV, an RNA virus in the alphavirus genus of the family Togaviridae. CHIKV is transmitted by infected female …

Aug 9, 2023 · Key facts COVID-19 is a disease caused by a virus. The most common symptoms are fever, chills, and sore throat, but there are a range of others. Most people make a full …

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, …

El virus puede propagarse desde la boca o nariz de una persona infectada en pequeñas partículas líquidas cuando tose, estornuda, habla, canta o respira. Estas partículas van desde …

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

Avian influenza A (H5N1) is a subtype of influenza virus that infects birds and mammals, including humans in rare instances. The goose/Guangdong-lineage of H5N1 avian influenza viruses first …

Shingles is a painful rash caused by the reactivation of the varicella-zoster virus (VZV), the same virus that causes chickenpox. Anyone who has had chickenpox can develop shingles, …

Latest WHO Disease Outbreak News (DONs), providing information on confirmed acute public health events or potential events of concern. According to Article 11.4 of the International …