Hepatitis A: Causes, Symptoms, Transmission, Treatment and Prevention
Hepatitis A is an inflammation of the liver caused by the hepatitis A virus (HAV). The virus is primarily spread when an uninfected (and unvaccinated) person ingests food or liquids contaminated with the feces of an infected person. The disease is closely associated with poor sanitary conditions and oral-anal sex. Unlike hepatitis B and...
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Influenza Virus: Causes, Symptoms, Transmission, Treatment and Prevention
The flu is a contagious viral infection caused by the Influenza virus (type A or B), which can cause mild to severe symptoms or even fatal complications. The influenza virus is transmitted mainly from person to person through the respiratory tract, by coughing or sneezing. Less commonly, it can also spread by touching a...
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Ebola: Causes, Symptoms, Transmission, Treatment and Prevention
The Ebola virus is a zoonotic pathogen that causes an acute, severe disease that is often fatal if not treated urgently. Ebola first emerged in 1976 in two simultaneous outbreaks, one in the Nzara region, South Sudan, and the other in Yambuku, Democratic Republic of the Congo, in a village near the Ebola River,...
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Diphtheria: Causes, Symptoms, Transmission, Treatment and Prevention
Diphtheria is an acute bacterial infection that typically affects the tonsils, throat, nose, and/or skin. The disease is transmitted from person to person through the inhalation of bacteria after an infected person has coughed, sneezed, or even laughed. It can also spread by handling used tissues or by using a glass used by an...
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Dengue Fever: Causes, Symptoms, Transmission, Treatment, and Prevention
Dengue fever or disease is a condition transmitted through the bite of an Aedes mosquito (also known as Ae. aegypti or Ae. albopictus). Although symptoms can be mild, severe fever can be life-threatening in just a few hours. There are 4 serotypes (types of a bacterial or viral strain) of this Dengue virus (DEN-1,...
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Coronaviruses: Causes, Symptoms, Transmission, Treatment, and Prevention
Coronaviruses are a family of viruses that cause infections in both animals and humans. They often originate in animals or birds, but can sometimes evolve and infect humans (zoonoses). In humans, the viruses can cause mild respiratory infections, such as a cold, but can lead to serious and even fatal illnesses, such as pneumonia,...
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Chickenpox (Varicella): Causes, Symptoms, Transmission, Treatment and Prevention
Chickenpox is an infectious, highly contagious disease caused by the varicella-zoster virus (VZV) and manifests as a vesicular rash in successive waves, often accompanied by episodes of fever, headache, muscle pain, and/or nasal discharge. It is also known as varicella and is typical of childhood, but it can also affect adults who have not...
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