Mosquitoes affect the health of people and animals more than any other insect pest worldwide. Biting female mosquitoes transmit many disease-causing organisms, including encephalitis, malaria, and yellow fever.
There are many different species of mosquitoes with different preferences for climate and breeding territory. Typically, mosquitoes lay their eggs in standing water. Mosquito larvae hatch from the eggs and remain in the water, feeding on tiny organisms. Once they mature, adult mosquitoes leave the water to breed.
Fever, fatigue, vomiting, and headaches. In severe cases it can cause yellow skin, seizures, coma, or death. Symptoms usually begin ten to fifteen days after being bitten. If not properly treated, people may have recurrences of the disease months later. In those who have recently survived an infection, reinfection usually causes milder symptoms. The disease is most commonly transmitted by an infected female Anopheles mosquito. The mosquito bite introduces the parasites from the mosquito’s saliva into a person’s blood.
Most cases have no symptoms, but when present they are usually mild and can resemble dengue fever. Symptoms may include fever, red eyes, joint pain, headache, and a maculopapular rash which generally last less than seven days. Up to now, it has not caused any reported deaths during the initial infection. Mother-to-child transmission during pregnancy can cause microcephaly and other brain malformations in some babies. Infections in adults have been linked to Guillain–Barré syndrome (GBS). Zika fever is mainly spread via the bite of mosquitoes of the Aedes type. It can also be sexually transmitted and potentially spread by blood transfusions
High fever, headache, vomiting, muscle and joint pains, and skin rash. Recovery generally takes two to seven days. In a small percentage of infections, the disease develops into the life-threatening dengue hemorrhagic fever, resulting in bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. The disease is spread by several species of mosquito of the Aedes type, principally A. aegypti.
Symptoms include the fever and joint pain which typically occurs two to twelve days after exposure. Other symptoms may include headache, muscle pain, joint swelling, and a rash. Most people are better within a week; however, occasionally the joint pain may last for months. The risk of death is around 1 in 1,000. The very young, old, and those with other health problems are at risk of more severe disease. The virus is spread between people by two types of mosquitos: Aedes albopictus and Aedes aegypti that mainly bite during the day.
West Nile fever
Symptoms may include fever, headaches, feeling tired, muscle pain or aches, nausea, loss of appetite, vomiting, and rash. Less than 1% of the cases are severe and result in neurological disease when the central nervous system is affected. People of advanced age, the very young, or those with immunosuppression, either medically induced, such as those taking immunosupressive drugs, or due to a pre-existing medical condition such as HIV infection, are most susceptible. It is spread is by various species of mosquitoes, with birds being the most commonly infected animal and serving as the prime reservoir host.