Answer:

C) Malaria

Malaria is a mosquito-borne infectious disease that affects humans and other animals. It is caused by single-celled parasites of the Plasmodium group. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches. In severe cases, it can cause yellow skin, seizures, coma, or death.

Malaria is primarily spread through the bites of infected female Anopheles mosquitoes. It can also be transmitted through blood transfusions, organ transplants, and sharing of needles or syringes contaminated with infected blood.

Malaria is a major public health concern in tropical and subtropical regions of the world. According to the World Health Organization, there were an estimated 229 million cases of malaria worldwide in 2019, with 409,000 deaths. Sub-Saharan Africa is the most affected region, with an estimated 94% of malaria cases and deaths.

Prevention and treatment of malaria include the use of mosquito nets, insecticides, antimalarial drugs, and vaccines. Early diagnosis and prompt treatment are critical to prevent severe complications and death.

In conclusion, malaria is a serious and potentially life-threatening disease that affects millions of people worldwide, particularly in tropical and subtropical regions. Prevention and treatment are essential to control the spread of the disease and reduce its impact on public health.