How is malaria transmitted?

Answer 1

Usually, people get malaria by being bitten by an infected female Anopheles mosquito. Only Anopheles mosquitoes can transmit malaria and they must have been infected through a previous blood meal taken on an infected person. When a mosquito bites, a small amount of blood is taken in which contains the microscopic malaria parasites. The parasite grows and matures in the mosquito’s gut for a week or more, then travels to the mosquito’s salivary glands. When the mosquito next takes a blood meal, these parasites mix with the saliva and are injected into the bite. Once in the blood, the parasites travel to the liver and enter liver cells to grow and multiply. During this "incubation period", the infected person has no symptoms. After as few as 8 days or as long as several months, the parasites leave the liver cells and enter red blood cells. Once in the cells, they continue to grow and multiply. After they mature, the infected red blood cells rupture, freeing the parasites to attack and enter other red blood cells. Toxins released when the red cells burst are what cause the typical fever, chills, and flu-like malaria symptoms. If a mosquito bites this infected person and ingests certain types of malaria parasites ("gametocytes"), the cycle of transmission continues. Because the malaria parasite is found in red blood cells, malaria can also be transmitted through blood transfusion, organ transplant, or the shared use of needles or syringes contaminated with blood. Malaria may also be transmitted from a mother to her fetus before or during delivery ("congenital" malaria). Malaria is not transmitted from person to person like a cold or the flu. You cannot get malaria from casual contact with malaria-infected people.

Answer 2

A person can get malaria from the bite of an infected female Anopheles mosquito, primarily between sunset and sunrise. Only Anopheles mosquitoes can transmit malaria, and they must have been infected by the malaria parasite through a previous blood meal taken from an infected person.

Malaria is not transmitted from person to person like a cold or the flu. A person cannot get malaria from casual contact with people infected with malaria.

When a mosquito bites a human infected with malaria, the insect takes in a small amount of blood that contains the microscopic malaria parasites. The parasite grows and matures in the mosquito's gut for a week or more, then travels to the mosquito's salivary glands. When the mosquito next feeds on the blood of a human, the parasites mix with the mosquito's saliva and are injected into the human's bloodstream.

Once in the blood, the malaria parasites travel to the liver and enter liver cells to grow and multiply. During this incubation period, the infected person has no symptoms. After as few as eight days or as long as several months, the parasites leave the liver cells and enter red blood cells. Once in the cells, the parasites continue to grow and multiply. After they mature, the infected red blood cells rupture, freeing the parasites to attack and enter other red blood cells. Toxins released when the red cells burst are what cause the typical symptoms of malaria, including fever, chills and other flu-like symptoms.

Because the malaria parasite is found in red blood cells, malaria also can be transmitted through blood transfusion, organ transplant, or the shared use of needles or syringes contaminated with blood. Malaria also can be transmitted from a pregnant woman to her fetus before or during delivery -- called congenital malaria.

Answer 3

How Is Malaria Transmitted

Answer 4

Malaria is transmitted through Mosquitoes. Easily curable but difficult to detect in the lab.

Answer 5

The female anopheles mosquito is the vector for human malaria. Some 60 species of this mosquito have been identified as vectors for malaria, and their distribution varies from country to country. When a mosquito bites an infected individual, it sucks the gametocytes, the sexual forms of the parasite, along with blood. These gametocytes continue the sexual phase of the cycle and the sporozoites fill the salivary glands of the infested mosquito. When this female mosquito bites the man for a blood meal, which it needs to nourish its eggs, it inoculates the sporozoites into human blood stream, thus spreading the infection.

The female anopheles mosquito bites man between 5 PM and 7 AM, with maximum intensity at midnight.

Other modes of transmission: Rarely malaria can spread by the inoculation of blood from an infected person to a healthy person. In this type of malaria, asexual forms are directly inoculated into the blood and pre-erythrocytic development of the parasite in the liver does not occur. Therefore, this type of malaria has a shorter incubation period and relapses do not occur.

1. Blood transfusion (Transfusion malaria): This is fairly common in endemic areas.

Following an attack of malaria, the donor may remain infective for years (1-3 years in P. falciparum, 3-4 years in P. vivax, and 15-50 years in P. malariae.)

Most infections occur in cases of transfusion of blood stored for less than 5 days and it is rare in transfusions of blood stored for more than 2 weeks. Frozen plasma is not known to transmit malaria.

The clinical features of transfusion malaria occur earlier and any patient who has received a transfusion three months prior to the febrile illness should be suspected to have malaria.

Donor blood can be tested with indirect fluorescent antibody test or ELISA, and direct examination of the blood for the parasite may not be helpful.

In endemic areas, it is safe to administer full course of chloroquine to all recipients of blood transfusion.

In transfusion malaria, pre-erythrocytic schizogony does not occur and hence relapses due to dormant hepatic forms also does not occur. Therefore, treatment with primaquine for 5 (or14) days is not indicated.

2. Mother to the growing fetus (Congenital malaria): Intrauterine transmission of infection from mother to child is well documented. Placenta becomes heavily infested with the parasites. Congenital malaria is more common in first pregnancy, among non - immune populations.

3. Needle stick injury: Accidental transmission can occur among drug addicts who share syringes and needles. (Therapeutic inoculation of malarial parasites, so as to induce fever, was a mode of treatment for neurosyphilis!)

Answer 6

You Need a malaria infected or had infection creacher and female mosquitoes (female need blood meal for reproduction).

Then if mosquitoes bite the person(animal or bird) who had malaria, that creacher will make mosquito contaminated, it will carry the malaria and transfer it to any creacher on subsequent bits.

Quelax and Anopheles mosquitoes are the major suspects.

Answer 7

Mosquitos

Answer 8

From the anopholes mosquito. Only some species of mosquito can transmit it.

Answer 9

Malaria is spread due to mosquito bite.All mosquitoes don't spread malaria.Only it get spread if Anopheles type of mosquito bites.

Answer 10

Mosquitoes are used for transport.