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Weegy: Malaria is a life-threatening blood disease caused by a parasite that is transmitted to humans by the Anopheles mosquito. User: Diagnostic tests can be used to identify illnesses and underlying causes of symptoms. Weegy: TRUE - Diagnostic tests can be used to identify illnesses and underlying causes of symptoms. User: If an older person went to the doctor with a fever, chills, body aches, and a cough, what would the doctor most likely suspect the person has Weegy: If an older person went to the doctor with a fever, chills, body aches, and a cough, the doctor most likely suspect the person has Influenza. User: The goal of the flu vaccine is to prevent you from becoming infected with influenza Weegy: The seasonal flu vaccine protects against three influenza viruses that research indicates will be most common during the upcoming season.The 2011-2012 flu vaccine provides protection against the three main viruses that research indicates will cause [ the most illness this season. ] ] User: After testing positive for an STI, it is important to contact all past sexual partners so they can also be tested. (More)

Weegy: To understand what HIV is, let s break it down: H ? Human ? This particular virus can only infect human beings. I ? Immunodeficiency ? HIV weakens your immune system by destroying important cells that fight disease and infection. [ A "deficient" immune system can't protect you. V ? Virus ? A virus can only reproduce itself by taking over a cell in the body of its host. Human Immunodeficiency Virus is a lot like other viruses, including those that cause the "flu" or the common cold. But there is an important difference ? over time, your immune system can clear most viruses out of your body. That isn't the case with HIV ? the human immune system can't seem to get rid of it. Scientists are still trying to figure out why. We know that HIV can hide for long periods of time in the cells of your body and that it attacks a key part of your immune system ? your T-cells or CD4 cells. Your body has to have these cells to fight infections and disease, but HIV invades them, uses them to make more copies of itself, and then destroys them. Over time, HIV can destroy so many of your CD4 cells that your body can't fight infections and diseases anymore. When that happens, HIV infection can lead to AIDS. ] User: Some STIs can be transmitted through a handshake. User: Doctors often advise a combination of treatments to eradicate an infection and treat symptoms. Weegy: TRUE. Doctors often advise a combination of treatments to eradicate an infection and treat symptoms. User: AIDS occurs when HIV destroys the immune system. (More)

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