Hepatitis A may be causing outbreaks in the United States, but hepatitis B is still endemic to most regions of the world. The vaccine for the disease is even suggested before traveling to any foreign destination.
As a disease that’s found all around the world, many scientists have wondered where hepatitis B came from.
In 2018, that source is still a topic for debit in the world of science.
Tuberculosis is a disease that primarily affects the lungs, causing symptoms like a bad cough, fever, coughing up blood and more. There are two types of tuberculosis infections, latent and active. If an infection is latent, it is not contagious to anyone else, and the patient shows no symptoms. In an active tuberculosis infection, they are very contagious and symptoms begin to show up quickly.
Dengue viruses are spread to humans through the bite of an infected mosquito of the Aedes species, more specifically the female Aedes aegypti or Aedes albopictus. Mosquito-borne diseases include malaria, Zika, West Nile virus, chikungunya, and dengue fever.
Among these diseases, dengue fever is considered to be the most immediately critical. According to the World Health Organization (WHO), dengue fever is also the most rapidly spread mosquito-borne disease with a “30-fold increase in global incidence over the past 50 years”. Dengue viruses are spread to humans through the bite of an infected mosquito of the Aedes species, more specifically the female Aedes aegypti or Aedes albopictus. With almost half of the world’s population, roughly 4 billion people, living in areas at risk of dengue fever, it’s important to recognize the mosquito specifies and to take necessary precautions to protect yourself.
In the warm seasons, mosquitoes are abundant. This means more itchy, red blotches may appear on your skin due to mosquito bites. But, do mosquitoes bite or sting people? The answer is neither. Mosquitoes stick a needle in your body and suck your blood out. This process is similar to how your blood sample is taken from your arm at a hospital. People refer to this action as a ‘bite’ because of how it feels.
Mosquitoes have to detect you first. They can sense sweat and carbon dioxide you breathe out from as far as 55 yards away (more than half the length of a football field). After they have detected you, they approach you and land on your body.
Rabies is a fatal viral disease for humans. Currently, there is no cure for the disease, especially once symptoms begin to show. But there is a preventative vaccination that a person can receive.
