People around the world commonly get infected with human coronaviruses 229e nl63 oc43 and hku1. The virus is transmitted by the faecal oral route.
Humans have been fighting viruses throughout history.
Virus types human. Cold flu stomach and hepatitis viruses are among the most common types of human viruses encountered worldwide. Rotavirus a the most common causes more than 90 of infections in humans. Two versions of the virus herpes simplex virus 1 and 2 cause a wide spectrum of human infections.
Human immunodeficiency virus 1. Here are the 12 viruses that are the world s worst killers based on their mortality rates or the sheer numbers of people they have killed. Genital herpes cold sores herpes eye infections herpes encephalitis brain infection and congenital herpes are common hsv infections.
Adults are rarely affected. Viruses can affect many areas in the body including the reproductive respiratory and gastrointestinal systems. The severity of viral illnesses ranges from mild to lethal.
By the age of five nearly every child in the world has been infected with rotavirus at least once. Conjugate vaccines inactivated vaccines live attenuated vaccines subunit vaccines and toxoid vaccines. There are several ways people can slow the spread of a virus in lieu of drugs or vaccination.
Herpes simplex viruses are common worldwide. Viruses accepted to cause human cancers include some genotypes of human papillomavirus hepatitis b virus hepatitis c virus epstein barr virus kaposi s sarcoma associated herpesvirus and human t lymphotropic virus. There are five different types of viruses.
However with each infection immunity develops and subsequent infections are less severe. All humans contract multiple viruses throughout the course of life. Human immunodeficiency virus 2.
Three recent examples of this are 2019 ncov sars cov and mers cov. There are five species of this virus referred to as a b c d and e. When most people hear the word virus they think of disease causing pathogenic viruses such as the common cold influenza chickenpox human immunodeficiency virus hiv sars cov 2 and others.
Sometimes coronaviruses that infect animals can evolve and make people sick and become a new human coronavirus.
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