by Malaria Q&A
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).
by Malaria Q&A
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.
by Malaria Q&A
QUESTION
Since January 2011 I got three times malaria. Is it come regularly? Last week also I got maleria and I took medicine but still I have mild headache and sweating feeling tiredenes in between..
ANSWER
The timing of the repeated malaria episodes you have experienced means that it could be recrudescence (where treatment does not completely kill all the malaria parasites in your blood), relapse (where the malaria goes dormant in your liver, then comes back—this is only caused by Plasmodium vivax and Plasmodium ovale malaria) or even re-infection.
However, first of all, the most important thing is to make sure you are properly diagnosed with malaria and secondly, that you receive the right type of treatment for the kind of malaria that you have.
The symptoms of malaria are very general (fever, chills, nausea, tiredness, aches) and can also be caused by many other illnesses and diseases. As such, in order to confirm you actually have malaria, you should have a blood test (thick and thin blood smear, looked at under the microscope by a trained technician, or a rapid diagnostic test (RDT). In some places you can buy these RDTs from local pharmacies and do the test yourself at home).
Depending on where you live, there may be different types of malaria present; in this case, if you do have malaria, it is important to find out which one you have.
P. falciparum is the most common kind in sub-Saharan Africa and first-line treatment is an artemisinin-based combination therapy, such as Coartem – most areas have P. falciparum that is resistant to chloroquine, so this is not appropriate as treatment, nor are sulfadoxine and pyrimethamine combinations (such as Fansidar).
If you have P. vivax or P. ovale, chloroquine may be used, again depending on where you are and whether resistance is known from your area or not. In addition, you might also talk to your doctor about taking primaquine to prevent future relapse and recurrence of the infection.
Repeated re-infection can be prevented by protecting yourself more thoroughly against getting bitten by an infected mosquito. For example, you should sleep under a long-lasting insecticide treated bednet, screen your windows and doors and wear long-sleeved clothing at night and in the evenings. Indoor residual spraying, which coats your walls with insecticide, can also prevent mosquitoes from persisting inside your home.
by Malaria Q&A
QUESTION
What is malaria?
ANSWER
Malaria is a serious and sometimes fatal disease caused by a tiny parasite that commonly infects a certain type of mosquito (of the genus Anopheles) which feeds on humans. People who get malaria are typically very sick with high fevers, shaking chills, and flu-like illness. Four kinds of malaria parasites can infect humans: Plasmodium falciparum, P. vivax, P. ovale, and P. malariae. Infection with P. falciparum, if not promptly treated, may lead to death. Although malaria can be a deadly disease, illness and death from malaria can usually be prevented.
by Malaria Q&A
QUESTION
Is there a way to verify that someone has had malaria? I had symptoms that were treated with only 10 days of proper 14 days prescription and had a relapse a year later. Have felt weak and keep my drinking to a very light level as a result. Is there test that can be taken to verify having/had plasmodium vivax?
ANSWER
The best way to test for relapsing malaria (i.e. Plasmodium vivax or Plasmodium ovale) is via a blood test while you are experiencing a recurrence of symptoms. Symptoms are associated with the parasite re-entering the blood, and so at this point, they can be visualized on a blood film, or their proteins detecting using a rapid diagnostic test. Other than that, you could also investigate having a serological test done (some forms of these tests are called ELISAs, standing for enzyme-linked immunosorbent assay).
These test for antibodies to specific proteins associated with malaria, and so can be designed to test for a particular strain, such as P. vivax. As antibodies can persist in the blood for weeks or even months after the initial infection has cleared, this could be a way for you to determine whether you had P. vivax without waiting for another relapse. This paper describes the development of a P. vivax-specific serological assay, though I am not sure whether such a test is commercially available as of yet.
If you are diagnosed with Plasmodium vivax, you should ask your doctor about the possibility of taking primaquine to kill the dormant liver stages and prevent future relapse. Primaquine is not recommended for people with G6DP deficiency, so you should be tested for this before taking the medication.
by Malaria Q&A
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.
by Malaria Q&A
QUESTION
How many countries are malaria infected?
ANSWER
As of 2010, there were 108 countries which were listed as having endemic malaria—that is, malaria which was transmitted within the country. This includes 43 countries in Africa, 10 countries in south-east Asia, 13 countries in the Eastern Mediterranean (which includes most of Central Asia and parts of North and East Africa—90% of the malaria burden in this region is suffered by Sudan, Afghanistan, Pakistan and Somalia), 10 countries in the Western Pacific (though this region constitutes less than 1% of global malaria cases) and 23 malaria-endemic countries in the Americas.
by Malaria Q&A
QUESTION
Where are the most deaths of malaria?
ANSWER
Over 90% of the deaths from malaria occur in sub-Saharan Africa, and in children under the age of five. According to the World Health Organisation’s 2011 World Malaria Report, the countries with the five highest numbers of reported malaria deaths for 2010 are (and number of reported deaths): Kenya (26,017 deaths), Democratic Republic of Congo (23,476), Tanzania (15,867), Burkina Faso (9,024) and Uganda (8,431).
However, it is important to note that this indicates the number of reported deaths that were confirmed as malaria; there are other countries in Africa which may have similar levels of malaria mortality but insufficient health infrastructure for accurate diagnosis of cause of death or reporting. Even in countries where reporting levels are high, causes of death are not always accurately determined.
by Malaria Q&A
QUESTION
What is malaria’s scientific name?
ANSWER
The genus name for the single-celled parasite which causes malaria is Plasmodium. In the genus, there are five species which infect humans: Plasmodium falciparum (the most deadly kind), P. vivax, P. ovale, P. malariae and P. knowlesi.
by Malaria Q&A
QUESTION
Hi, I am in Goa and so far have not been bitten by anything. I am taking anti malaria tablets which I do not like. My question is this. If I do not receive any bites do I need to complete the course when I get home?
ANSWER
It is always better to complete the course of anti-malarials, just in case you actually did get bitten but just did not notice it. However, in some cases, the side-effects of anti-malarials can be uncomfortable and unpleasant, so I understand your dilemma. Just remember that there is always a risk of contracting malaria if you stop your anti-malarials early.
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