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Malaria is a disease caused by a parasite. The parasite is spread to humans through the bites of infected mosquitoes. People who have malaria usually feel very sick with a high fever and shaking chills.

While the disease is uncommon in temperate climates, malaria is still common in tropical and subtropical countries. Each year nearly 290 million people are infected with malaria, and more than 400,000 people die of the disease.

To reduce malaria infections, world health programs distribute preventive drugs and insecticide-treated bed nets to protect people from mosquito bites. The World Health Organization has recommended a malaria vaccine for use in children who live in countries with high numbers of malaria cases.

Protective clothing, bed nets and insecticides can protect you while traveling. You also can take preventive medicine before, during and after a trip to a high-risk area. Many malaria parasites have developed resistance to common drugs used to treat the disease.

Hepatitis C is a bloodborne pathogen poses the greatest transmission risk.

What is Hepatitis C?

A viral illness called hepatitis C can result in significant liver damage by inflaming the liver. Contaminated blood can spread the hepatitis C virus (HCV).

Hepatitis C treatment up until recently required weekly injections and oral drugs, both of which were difficult for many HCV-infected persons to take due to underlying health issues or unfavorable side effects.

Today, oral medicines used daily for two to six months can usually cure chronic HCV.

Nevertheless, around half of those who have HCV are unaware of their infection, primarily because they don't exhibit any symptoms, which might take years to manifest.

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