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  1. Coronavirus - World Health Organization (WHO)

    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 …

  2. Marburg virus disease - World Health Organization (WHO)

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

  3. 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 …

  4. Smallpox - World Health Organization (WHO)

    Nov 14, 2024 · Smallpox is an acute contagious disease caused by the variola virus, a member of the orthopoxvirus family. It was one of the most devastating diseases known to humanity and …

  5. Ebola disease - World Health Organization (WHO)

    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, …

  6. Coronavirus disease (COVID-19) – World Health Organization

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

  7. HIV and AIDS - World Health Organization (WHO)

    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 …

  8. What is COVID-19 - World Health Organization (WHO)

    •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

  9. Chikungunya fact sheet - World Health Organization (WHO)

    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.

  10. Coronavirus disease (COVID-19)

    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 …