Is Malaria Contagious?

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QUESTION

Is malaria contagious?

ANSWER

Malaria cannot be transmitted directly between people via normal circumstances, so it is not contagious in the same way flu or the common cold is contagious. It also cannot be sexually transmitted.

In most cases, malaria can only be transmitted via the bite of an infected mosquito, so unless those mosquitoes are present, it cannot be transmitted. Because infectious stages of the parasite are present in the blood, in some cases malaria can be transmitted via blood transfusion (if the blood is not properly treated or screened), via organ transfer, or from a mother to her foetus, either via the placenta or during childbirth (this is called “congenital malaria”). However, compared to the amount of transmission which occurs via mosquito, these cases are relatively rare, and the vast majority of the time, malaria is not directly transmitted between people.

Can I Catch Malaria from Someone?

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QUESTION

My fiancee contracted malaria a few years ago. It was diagnosed as recurring. Could I contract malaria from the infected person, I have had similar symptoms which last a day or two, recurring with regular two week intervals, of which the most concerning are malaise, fever, stiff neck, headaches and severe pains over abdomen spreading into my mid back. What should I do?

ANSWER

Malaria cannot be directly transmitted between two people—it is almost always transmitted by the bite of an infected mosquito, and cannot survive at low temperatures (under about 17 degrees C). In some very rare cases, malaria can be transmitted through organ transplant, blood transfusion and pregnancy, since it infects red blood cells. Given these restrictions, it is close to impossible that you contracted malaria from your fiancee, and you should talk to your doctor about alternative explanations.

Also, if your girlfriend has recurring malaria, she should talk to her doctor about taking primaquine. While not suitable for everyone (namely people with G6DP deficiency should not take it), it can kill the dormant stages of the malaria parasite and prevent recurrence.

Sexual Transmission of Malaria

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QUESTION

Can malaria be transmitted by having sex with an infected person?

ANSWER

No. Malaria cannot be transmitted sexually. It is only present in the blood and in certain organs such as the liver and spleen. As such, it is usually only transmitted via the bite of an infected mosquito, though in rare cases, it can be transmitted directly via blood transfusion, organ transplant or via the placenta during pregnancy (called congenital malaria).

Malaria Causes

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QUESTION

What are the causes of malaria?

ANSWER

Malaria is caused by a parasite called Plasmodium, which is transmitted via the bites of infected mosquitoes. In the human body, the parasites multiply in the liver, and then infect red blood cells. Usually, people get malaria by being bitten by an infective 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 an infected person, a small amount of blood is taken in which contains microscopic malaria parasites. About 1 week later, when the mosquito takes its next blood meal, these parasites mix with the mosquito’s saliva and are injected into the person being bitten.

Please see “Malaria Symptoms and Causes” for more.

Sexual Intercourse During Malaria Infection

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QUESTION

Can one have sexual intercourse during malaria infection?

Can malaria be transmitted by sexual intercourse?

ANSWER

Malaria cannot be transmitted by sexual intercourse. It is usually transmitted via the bite of an infected mosquito. Because the parasites infect red blood cells, malaria can also be transmitted via blood transfusion (if the blood is not screened beforehand), organ transplant, and from a mother to her unborn baby, either during childbirth or via the placenta.

Is it possible to inherit malaria?

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QUESTION

I was wondering is it possible for a father who contracted malaria in the Korean War to pass it to his unborn child.

ANSWER

No. Malaria can only be transmitted by the bite of an infected mosquito, and in rare cases, through infected blood, for example from a blood transfusion or organ transplant. Mothers can transmit malaria to their unborn babies via the placenta or through blood during childbirth (this is called congenital malaria) but there is no way that a father could pass malaria on to his child.

What is malaria, and what causes it?

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QUESTION

What is malaria and what causes it?

ANSWER

Malaria is caused by a parasite called Plasmodium, which is transmitted via the bites of infected mosquitoes. In the human body, the parasites multiply in the liver, and then infect red blood cells. Usually, people get malaria by being bitten by an infective 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 an infected person, a small amount of blood is taken in which contains microscopic malaria parasites. About 1 week later, when the mosquito takes its next blood meal, these parasites mix with the mosquito’s saliva and are injected into the person being bitten.

Because the malaria parasite is found in red blood cells of an infected person, 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 unborn infant before or during delivery (“congenital” malaria).

Malaria Causes

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QUESTION

What are the causes of malaria?

ANSWER

Malaria is caused by a parasite called Plasmodium, which is transmitted via the bites of infected mosquitoes. In the human body, the parasites multiply in the liver, and then infect red blood cells. Usually, people get malaria by being bitten by an infective 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 an infected person, a small amount of blood is taken in which contains microscopic malaria parasites. About 1 week later, when the mosquito takes its next blood meal, these parasites mix with the mosquito’s saliva and are injected into the person being bitten.

Because the malaria parasite is found in red blood cells of an infected person, 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 unborn infant before or during delivery (“congenital” malaria).

How does one catch malaria?

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QUESTION

How do you get malaria?

ANSWER

Malaria is caused by a parasite called Plasmodium, which is transmitted via the bites of infected mosquitoes. In the human body, the parasites multiply in the liver, and then infect red blood cells. Usually, people get malaria by being bitten by an infective 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 an infected person, a small amount of blood is taken in which contains microscopic malaria parasites. About 1 week later, when the mosquito takes its next blood meal, these parasites mix with the mosquito’s saliva and are injected into the person being bitten.

Because the malaria parasite is found in red blood cells of an infected person, 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 unborn infant before or during delivery (“congenital” malaria).

Is malaria infectious?

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QUESTION

Is malaria infectious or noninfectious?

ANSWER

Malaria is considered an infectious disease because it can be transmitted from one person to another, via the bite of an infected mosquito. Since the parasite that causes malaria is passed through the blood, it can also be transmitted via organ transplant, blood transfusion, or via pregnancy (so-called “congenital” malaria).