Reply: Dengue is a disease caused by any one of four closely related dengue viruses. The viruses are transmitted to humans by the bite of an infected mosquito. DHF is a more severe form of dengue infection. It can be fatal if unrecognized and not properly treated in a timely manner. DHF is caused by infection with the same viruses that cause dengue fever.

Reply: No. Malaria is not spread from person to person like a cold or the flu, and it cannot be sexually transmitted. You cannot get malaria from casual contact with malaria-infected people, such as sitting next to someone who has malaria.

Reply: Two basic actions can protect you from typhoid fever:

• Avoid risky foods and drinks.
• Get vaccinated against typhoid fever

Reply: AIDS stands for Acquired Immune Deficiency Syndrome. An HIV-positive person receives an AIDS diagnosis after developing one of the CDC-defined AIDS indicator illnesses. A positive HIV test does not mean that a person has AIDS. infection with HIV (Human Immunodeficiency Virus) can weaken the immune system to the point that the system has difficulty fighting off certain infections. These types of infections are known as opportunistic infections. Many of the infections that cause problems or that can be life-threatening for people with AIDS are usually controlled by a healthy immune system. The immune system of a person with AIDS has weakened to the point that medical intervention may be necessary to prevent or treat serious illness.

Reply: Tuberculosis, also called TB, is an infectious disease caused by a bacterium named Mycobacterium tuberculosis. TB usually involves the lungs (pulmonary TB) but can infect almost any organ in the body. TB is almost always curable with antibiotics. The most common symptoms are: cough, (usually for more than 3 weeks); coughing up blood or sputum (phlegm from deep inside the lungs) pain in the chest; fatique; weight loss; fever; or night sweats.