Mosquito-borne diseases have spread across the globe, affecting almost every part of the world. From yellow fever to malaria to Zika virus, these diseases do more than get headlines, causing millions of annual deaths.

Unfortunately, the problems with these diseases appear to be getting worse.

A recent study predicts that almost half of the world’s population will be infected with these illnesses. According to new research published in the journal Nature Microbiology, a few factors play a role in this.

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While we continue searching for a vaccine to combat malaria, we rely on other methods to prevent the virus. Two of the most common tools in this process are mosquito nets and antimalarials.

A new study looks at how we can combine the two products.

Malaria spreads through the bites from mosquitoes. Once infected, the virus can quickly create debilitating and deadly symptoms. This might mean headaches and muscle aches or fatigue. The virus could then progress to a high fever, vomiting, and convulsions, resulting in death.

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Travelers often have a hard time predicting when a food or drink will infect them with typhoid fever. The Salmonella typhi bacteria just needs to get into a some fresh fruit or a glass of water while at a restaurant, and the traveler catches the disease.

Once they’re infected, the real problems can start. The disease can cause mild symptoms like headaches, loss of appetite, and fatigue. In some cases, it progresses to much more dangerous levels, like stomach pains and a high fever. According to the CDC, typhoid fever can “kill up to 30 percent of people who get it” and go untreated.

Those eye-opening numbers make the typhoid vaccine that much more important for travelers.

But, researchers from the University of Liverpool and Liverpool School of Tropical Medicine wanted to know if the vaccine could do more. Does the the immunization help against other diseases?

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The Bolivarian Republic of Venezuela is the official name of the South American country, Venezuela. The nation is vast, bordering the Caribbean Ocean, as well as the nations of Brazil, Colombia, and Guyana. Its terrain ranges from the relaxing sandy beaches along the coast, to the treacherous ridges of the Andes Mountains. It even boasts wonders like to the Amazon Jungle and Guiana Highlands.

You wouldn’t know that Venezuela is in such turmoil from looking at its topography and pictures of the glorious scenery.

But, Venezuela’s government is in shambles. The economy has also dwindled to near non-existence. Citizens are now fleeing to neighboring countries in epic numbers, to the tune of over 5,500 people each day.

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There are a few types of influenza and thousands of virus strains, which is why scientists develop the new flu shot each year.

The flu has different carriers too. Flu viruses can spread from animals to humans. This process is referred to as zoonotic transmission and has led to global outbreaks and pandemics. In recent years, you’ve likely heard of those worldwide flu epidemics courtesy of animals. Pigs, chickens and other birds can carry the virus.

And now, bats join the list as animals that might spread the flu.

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