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Staying Healthy on the Road Medical info, e.g. malaria, vaccinations, travel medical tips, medical insurance, where to find a doctor.
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Old 26 Apr 2014
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How to Prevent and Treat Malaria

April 25 is World Malaria Day. Malaria is found most often in Africa, Southern Asia, Central America, and South America, and is relatively rare in the United States.

Malaria is caused by a bite from a parasite-infected mosquito. Symptoms of malaria can include fever, chills, sweats, body aches, and muscle pain. Fever that goes away and comes back is fairly common. Nausea, vomiting, abdominal pain, backache, and dark urine are also possible symptoms. More severe forms involving altered mental status and organ involvement typically require hospitalization. Left untreated, malaria can be fatal.

According to the Centers for Disease Control and Prevention:

--3.4 billion people live in areas at risk of malaria transmission in 106 countries and territories.

--The World Health Organization estimates that in 2012, malaria caused 207 million clinical episodes, and 627,000 deaths.

--About 1,500 cases of malaria are diagnosed in the United States annually, mostly in returned travelers.

Dr. Phil Seidenberg, who spent five years living and working in Zambia as Global Rescue’s African Regional Medical Director, has treated many malaria patients in the course of his career. Dr. Seidenberg points out that significant global progress has been made with malaria over the past decade, with better control of malaria and fewer deaths from malaria for multiple reasons. We spoke with Dr. Seidenberg and posed five common questions that travelers may have about the risks, prevention and treatment of malaria.

1. How do I know if malaria is an issue where I’m traveling?

For updated information on countries with malaria, use the resources available through either the Center for Disease Control (CDC) or the World Health Organization (WHO). Both of these organizations have maps with malaria risk levels indicated by country, and for regions within countries as well. Global Rescue members can contact Global Rescue for specific malaria advice.

Travelers headed to Africa should be aware that, while progress has been made in controlling malaria on the continent, an estimated 91% of deaths from malaria in 2010 were in the African Region (CDC). According to the WHO, in recent years, four countries have been certified by WHO as having eliminated malaria: the United Arab Emirates (2007), Morocco (2010), Turkmenistan (2010), and Armenia (2011).

It is important to consider the time of year of your travel. If a country has malaria, there is usually some seasonality to it. Typically malaria follows the rainy season, and is particularly active in the middle to the late part of the rainy season when water is pooling in areas; standing water allows malaria-carrying mosquito larva to populate.

Another consideration is how rural will your travel be, because in general malaria is more common in rural areas. In locations around the world where there is greater control, such as in capital cities, travelers will likely face less risk. However, if travelers are planning on rural travel and there is malaria in these countries, they need to be well informed and take preventive measures.

2. Who are the people greatest at risk?

Anyone who is not native to an area certainly faces an increased susceptibility to malaria. There is a level of tolerance that develops over time in those who are born and live in areas with malaria. A look at global statistics shows that greater than 75% of people who die from malaria are kids under five years old. If you are thinking of bringing kids along to areas with malaria, it is not a definite no-no but it is something to weigh carefully because the kids are the ones who do more poorly. The elderly are the next at-risk population, and the third class of traveler at an increased risk is pregnant women.

3. If I go to a malarial area, should I take medication?

There are anti-malarial prophylactic medications (preventative therapies) that one can take. It is important to note, however, that none of these treatments is 100 percent effective. You should seek advice from your regular healthcare provider, or a provider experienced in travel medicine to help decide which of these medications might be best for your individual health profile.

The primary recommendation I usually give is to choose a simple option such as Doxycycline, which is available everywhere. It needs to be taken only one to two days prior to travel, and the dose is just 100 milligrams once a day. It is contraindicated for kids younger than eight, mainly for cosmetic reasons because it stains teeth. Doxycycline is not a first choice medication for pregnant women, but may be okay to use during pregnancy in certain situations. The major side effect with its use is sun sensitivity. It causes a small number of people to burn really quickly and often the locations with malaria are sunny and tropical. Doxycyline can also be used for skin infections and, among other things, as treatment for some types of pneumonia, so it is in many ways useful to have in a travel case.

Malarone is another great option. It is a very good, safe medication and very well-tolerated, although a little bit more difficult to find outside of travel clinics. Malarone is taken daily, and needs to be started only one to two days before travel. Side effects are minimal. Importantly, Malarone consists of a two-drug punch that greatly reduces the chance of contracting a resistant malarial strain. This medication cannot be used by pregnant women. Malarone is more expensive than the other options, and since it is taken daily, cost could be a factor for some, especially on longer trips.

A third option is mefloquine, or Lariam. It is preferred by some people because it is taken on a weekly, not daily, basis. Lariam, which is safe for pregnant women, must be started at least two to three weeks before travel, and continued for up to four weeks upon completion of travel. While it is less expensive than some other options, Lariam has been shown to have more side effects than any other anti-malarial drug. However, many travelers use Lariam and are just fine. People always ask about Lariam because they hear about people reporting crazy dreams. Psychotic side effects are anecdotal, never really proven, but there is enough anecdotal evidence that typically I suggest other options first.

4. Are there other steps I can take or products to help protect against malaria?

Definitely. Take precautions such as wearing long sleeves, using DEET repellants to ward off mosquitoes, and sleeping under netting. Most countries typically have mosquito nets in stores and even supermarkets, but if you’re concerned that you won’t be able to find them, it is a good idea to buy them in advance. The insecticide treated nets are really the ones to use. People sometimes pre-treat their clothing, too.

It is important to know that the two peaks for malaria transmission are right at dusk and then right before sunrise. These are times when the mosquitoes are a little bit more active and more people are in contact with active mosquitoes, which is probably why transmission occurs most frequently between those two periods. Be especially cautious at these times.

5. What do I do if I’m traveling and I think that I may have malaria?

The first step is to determine if you have malaria. In most African capital cities, you can go into almost any pharmacy and pick up a Rapid Diagnostic Test (RDT). It involves a simple finger *****, a few drops of blood, and a 15-minute wait for results. RDTs are part of the reason that malaria is under control, because we are no longer indiscriminately treating kids and people with fevers that are not malaria. Be cautious about the expiration dates, however, and do not buy anything that has expired. The RDTs are no different for kids versus adults. Another option is to go to a clinic. Almost any clinic operating in malarial countries will be able to do a very quick blood smear or a Rapid Diagnostics Test, too.

What do you do if you have malaria? Most hospitals in malarial countries are more than capable of diagnosing and treating malaria. For treatment, the WHO recommends Artemisinin Combination Therapy, or ACT. However, do not assume that ACT is necessarily what you will receive. Absolutely ask for ACT by name. Most healthcare providers should know what that means, even though there are different trade names in some parts of the world. It is worth knowing that for almost all simple malaria, even complicated malaria, artemisinin compounds are the ones to use. Those that only have single artemisinin are, over time, quite bad for our malaria treatment options because the parasite develops resistance early. (Emerging artemisinin resistance is a major concern, according to the WHO, in certain areas of the world.) The combination therapy hits the parasite with two active medications working against it.

For severe malaria, usually defined by altered mental status or organ dysfunction, in some places they are starting to do artemisinin IV drips. This approach has been shown to be better than good old quinine, which still is very effective. But typically if someone were hospitalized with severe malaria, quinine versus artesunate are the only real options for treatment.

It is extremely important to be vigilant upon returning home. First, if travelers are taking a prophylactic that requires them to continue to take it for a few weeks afterwards, they must make sure to do that. Second, and even more dangerous in my view, is that it is hard to get malaria diagnosed in the States unless someone really thinks about it. In fact, this happened to friends of mine when they came back with their kids from Africa. It is an easy thing for a lab to take a look at a blood smear under with a microscope, but when medical professionals don’t ever see malaria that often, they’re not going to think about it. So, if someone comes back, gets sick and they’re worried about malaria, they need to really be careful that they tell whoever is seeing them, “By the way, I was in Haiti. Can you check me for malaria?” It could be a couple of months before travelers should consider themselves no longer at risk after returning home.

Again, it is always a good idea for travelers to check in with their primary care provider or a travel medicine professional before traveling for a detailed discussion of their risk for malaria.

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Zac Upchurch, Global Rescue
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Old 6 May 2014
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great post for a terrible thing , very informative too . A new a guy did a ride for "malaria" not long ago but we never hear anything from him so I guess he had nothing to say ??
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Old 9 May 2014
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Thank you for the reply and glad you found it helpful!

Global Rescue - ZU
Zac Upchurch, Global Rescue
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Old 17 May 2014
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Great stuff. Keep it coming. Thank you.
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Old 9 Aug 2014
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Just had a look on South & Central America & Caribbean - Travel Vaccines and Malaria Prophylaxis for jabs required for South America and there was a bit on Malaria in Sth Am
It states that depending on where you are it depends on what type of Pill you need to take, you will be like a walking Pharmacy.
Is there not a standard Pill you can take?
How do you know when to finish one type and start the next?

The Different Drug Regimens
Regimen 1 Mefloquine one 250mg tablet weekly. OR
Doxycycline one 100mg capsule daily. OR
Malarone one tablet daily.
Regimen 2 Chloroquine 300mg weekly (2x150mg tablets). PLUS
Proguanil 200mg daily (2x100mg tablets).
Regimen 3 Chloroquine 300mg weekly (2x150mg tablets) OR
Proguanil 200mg daily (2x100mg tablets).
Regimen 4 No prophylactic tablets required but anti mosquito measures should be strictly observed: Avoid mosquito bites by covering up with clothing such as long sleeves and long trousers especially after sunset, using insect repellents on exposed skin and, when necessary, sleeping under a mosquito net.

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Old 10 Aug 2014
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Why make is so convoluted? You'll go crazy trying to stop and start and juggle.

Take just one of the following: Malarone, mefloquine or doxy as need, side effect profiles and budget allow. Figure out your own pill count based on time in malarial areas, personal risk tolerance, and the dosing requirements (e.g., need to continue taking mefloquine for a month after departing malarial areas).

And don't take that site too seriously--it's not accurate and (repeating) needlessly complicated. Go for CDC or WHO information. The OP on this thread is a fine start, too.

Hope that's helpful.

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Old 10 Aug 2014
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Originally Posted by markharf View Post
Why make is so convoluted? You'll go crazy trying to stop and start and juggle.

Take just one of the following: Malarone, mefloquine or doxy as need, side effect profiles and budget allow. Figure out your own pill count based on time in malarial areas, personal risk tolerance, and the dosing requirements (e.g., need to continue taking mefloquine for a month after departing malarial areas).

And don't take that site too seriously--it's not accurate and (repeating) needlessly complicated. Go for CDC or WHO information. The OP on this thread is a fine start, too.

Hope that's helpful.

Thanks Mark
Yeah it is a bit too much information to take in

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Old 27 Apr 2015
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Great post, wondering if it's easy to find Rapid Diagnostic Test (RDT) through Africa?
I also read that it was easy to get a wrong result if you don't know how to use it, so that it's always better to go to a clinic if you're not a nurse or doctor yourself.

Is this true?

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