Question

Which disease is not transmitted by mosquitoes
(a)Dengue
(b)Malaria
(c)Brain fever or encephalitis
(d)Pneumonia

Answer 1

Hint: This disease is caused by infections of viruses, fungi, and bacteria. It affects the alveoli present in the lungs. It has 4 stages of infection. They are congestion, red hepatization, grey hepatization, and resolution.

Complete answer:
Out of the four given options, Pneumonia is a disease that is not transmitted by the mosquitoes. Pneumonia refers to various pulmonary infections that are caused by viruses, fungi, and bacteria. The bacteria Diplococcus pneumoniae is the predominant causative agent of pneumonia. Pneumonia will generate an inflammatory condition in the lungs and it will affect the respiratory tract and the nasal cavity. The transmission is caused due to coughing, sneezing, and direct contact with an infected person.
Dengue, malaria, and brain fever are transmitted by mosquitoes.
Dengue: Dengue is transmitted by various species of the female mosquitoes belonging to the Aedes genus. The virus possesses five serotypes and thus infection with one type will give lifelong immunity to that particular type and provides a short-term immunity to the others.
Malaria: Malaria is caused by the plasmodium group which is single-celled microorganisms. The disease is transmitted mostly by an infected female Anopheles mosquito. The mosquito bite will introduce the parasites present in the mosquitoes via the mosquito's saliva into the blood of a person. These parasites will travel to the liver where they will mature and reproduce. The most virulent form of malaria is caused by P. falciparum and the death rate is high. Whereas P. vivax, P. ovale, and P. malariae will cause a milder form of malaria.
Brain fever or encephalitis: Japanese encephalitis virus (JEV) causes Japanese encephalitis (JEV) which is an infection of the brain. JEV is spread by the Culex type of mosquitoes.
So, the correct answer is, ’Pneumonia’.

Note: To avoid mosquito-related diseases, we have to prevent ourselves from the mosquito bite. It is proved that lemon eucalyptus, peppermint oil, and lemongrass oil will act as a natural mosquito repellent. Additionally, many people claim that vitamin B intake reduces the risk of malaria but it is not yet proved.