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Pneumonia is a lung infection caused by bacteria, viruses, fungi or parasites, which presents symptoms such as dry or phlegm cough, high fever and shortness of breath. The most common pneumonias are those caused by bacteria (bacterial pneumonia), mainly by Read more

Smallpox, also called the bladder, is an infectious disease caused by the Orthopoxvirus variolae virus . Along with the black plague, tuberculosis and AIDS, smallpox is considered one of the most deadly diseases on the planet. It affects the immune Read more

Measles is an infectious disease caused by the virus of the Paramyxoviridae family , which is called Morbillivirus . It usually affects babies and children up to 5 years old who have not had the vaccine. Infected people have reddish Read more

The Spanish flu was a pandemic that occurred in 1918 . It is estimated that about 50 to 75 million people have died or the equivalent of 5% of the planet’s population. In Brazil, the number of fatalities was 35,000 Read more

The flu, common flu or influenza is a disease caused by viruses that causes inflammation in the respiratory system. The scientific name for the flu virus is Myxovirus influenzae . It is the most common respiratory disease in humans, which Read more

Viruses are microscopic beings made up of DNA or RNA and protected by a layer formed of proteins. They are considered intracellular parasites and, therefore, their functions can only be performed when they enter a host cell to use all Read more