In early September 2019, Kenya became the third country to administer the only licensed malaria vaccine. The first recipients of this vaccine were at-risk children in rural areas.

Malaria is a deadly mosquito-borne disease caused by a parasite that kills around 435,000 people each year, with around 92% of those deaths occurring in sub-Saharan Africa. Most of malaria’s victims are children under five. It kills one child every two minutes.

Even with improved treatments around the world, we still seem no closer to eradicating malaria. But, a widely-used vaccine could be the first step in saving another 435,000 lives from the disease.

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Increases of measles and hepatitis A have already made their way across the United States. While many mosquito-borne diseases like malaria and Zika aren’t a problem in the U.S., it appears there’s a different illness spreading.

Cities in Connecticut, Rhode Island, Michigan, Massachusetts and Florida, have reported cases of Eastern Equine Encephalitis (EEE), a sometimes-deadly mosquito-borne virus.

Five people across three states have already died from this virus in the U.S. this year. As a result, many states have warned locals to make precautions against the disease.

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Due to the CDC’s recent health alert for hepatitis A outbreaks, many people are wondering what makes the main types of hepatitis, A, B and C different.

Is one type more serious than another? Do they all present with the same symptoms? Can you catch each of them the same way? Are there any other notable factors which distinguish them?

Let’s find out.

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The vast majority of the world doesn’t currently worry about polio. With outbreaks of measles, hepatitis A and Ebola, most countries don’t need to worry about polio.

But, over 60 years after the vaccine was created, three countries still struggle with the disease. Nigeria, Afghanistan and Pakistan are the last three countries in the world where polio is still an active threat.

And after years of trying to end the disease in Nigeria, that list could soon get shorter.

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The CDC has now issued a health alert amidst the ongoing hepatitis A outbreaks. The outbreaks have already caused more than 25,000 reported cases of illness in the United States since 2016.

Regions on the east coast have been particularly affected with the largest number of cases currently taking place in Kentucky, Ohio and Florida:

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