Dengue viruses spread to people through the bite of an infected Aedes species mosquito: Aedes aegypti and Aedes albopictus. Dengue is the fastest spreading vector-borne disease in the world endemic in 100 countries.
All viruses, including SARS-CoV-2, the virus that causes COVID-19, change over time. The changes may affect the virus's properties, such as how easily it spreads, the associated disease severity, or the performance of vaccines, therapeutic medicines, diagnostic tools, or other public health and social measures.
Our health is connected with the state of our planet. Environmental issues directly affect all human lives and health. For us to be healthy, we require: clean air, safe drinking water, a supply of nutritious food, and safe shelter. But climate change threatens these essential ingredients to good health. That's why it is the focus of this year's World Health Day Celebration (7 April 2022).
The Inter-Agency Task Force for the Management of Emerging Infectious Diseases (IATF-EID) has approved on Sunday, February 27 to place the National Capital Region and 38 other areas under Alert Level 1 from March 1 to 15.
COVID-19 vaccines are working well to prevent severe illness, hospitalization, and death. However, public health experts are starting to see reduced protection over time against mild and moderate disease, especially among certain populations.