What causes measles?

Single viral strain. Measles is caused by a virus with only 1 known strain & humans as the only known source. Infection is passed by contact with infected fluid on surfaces or in the air from a sneeze or cough. Immunization has reduced the case numbers when used, but is not 100% efective after 1 dose. Ease of international travel & transmission during incubation results in clusters of new cases every year.

Related Questions

What typically causes the measles?

Measles virus. This has nothing to do with bacteria. It is a measles virus, a member of the paramyxoviridae family.Humans are the only known carrier/host. It can be contained by vaccinating all susceptible humans. It has many possible serious complications which include death in 1/1000 cases. Read more...