HIV stands for Human Immunodeficiency Virus. It is a virus that causes profound immunodeficiency, or the weakening of the immune system. As such, it gradually renders the body defenseless against any forms of pathogen, including those that would not cause disease in healthy human beings. The virus destroys certain white blood cells that are responsible for immunity and protecting the body against disease. When the body no longer has enough of those white blood cells, an individual is said to have AIDS, or Acquired Immunodeficiency Syndrome. HIV is the virus, while AIDS is the severe condition caused by the virus.

Ang TB ay isang uri ng sakit na dulot ng mikrobyong Mycobacterium tuberculosis na madalas makaapekto ng baga.Maaari ring maapektuhan ang ibang bahagi ng katawan gaya ng buto, utak, bato, at atay.Alamin ang tamang impormasyon para sa iyong matagumpay na paggaling. - DoH

Malaria is a mosquito-borne, as well as a blood-borne, disease. Although it can be fatal, it is now also largely preventable through prophylactic medication. Most cases are heavily concentrated in Africa at present, but the disease also still occurs throughout the Middle East; South, East, and Southeast Asia; Oceania; and Latin America.

Dengue fever is a mosquito-borne viral infection that is endemic to the Philippines. It affects people of all ages. Its severe form, dengue hemorrhagic fever, involves heavy bleeding and can be fatal. 

Dengue has four strains, which means a person can be infected as many as four times in a lifetime. Each succeeding infection increases the chance of developing hemorrhagic fever. - DoH