Malaria is a mosquito-borne infectious disease caused by a parasite called Plasmodium. It is one of the most common and deadliest diseases in the world.

The symptoms of malaria can vary depending on the type of malaria and the severity of the infection. However, common symptoms include:

• Fever: The fever is usually high and can last for several days.
• Chills: The person may experience chills, especially during the initial stage of the infection.
• Sweating: The person may sweat profusely, especially during the later stages of the infection.
• Headache: The person may experience a headache.
• Muscle aches: The person may experience muscle aches.
• Nausea: The person may experience nausea.
• Vomiting: The person may vomit.
• Diarrhea: The person may have diarrhea.

Malaria is spread through the bite of an infected mosquito. The mosquito becomes infected when it bites an infected person. When the mosquito bites another person, it can transmit the parasite to that person.