The most common symptoms include coughs, colds, as well as a fever. For most people, influenza goes away on its own after some time.
But for persons with weak immune systems such as babies, the elderly, those undergoing chemotherapy, and persons with HIV or AIDS, influenza can be deadly. Complications of flu can include ear infections, pneumonia, bronchitis, and even heart problems.
Just like measles, the best way to deal with influenza would be to get vaccinated.
Another one of the deadliest viruses in the world is dengue3. Dengue is different from other viral infections in that people get infected when they get bitten by an infected mosquito. This is why during the rainy season, dengue cases tend to go up, because the rain creates puddles of water wherein mosquitoes can lay their eggs.
The symptoms of dengue include fever, fatigue, muscle pains, headaches, as well as nausea and vomiting. More severe symptoms can include bleeding gums, persistent vomiting, and having blood in vomit.
It is estimated that 100-400 million people get infected with dengue each year. If the disease is not managed properly, then it can lead to serious complications and even death.
The best way to deal with dengue is to avoid getting bitten by mosquitoes, and by controlling the mosquito population through fumigation, cleaning, etc.
HIV, or the human immunodeficiency syndrome, is a virus that affects a person’s immune system. It is a contagious disease, but people get infected by having unprotected sex, or through blood transfusions involving infected blood4.
Since the start of the HIV pandemic, 36.3 million have died from AIDS, which is a complication of HIV.