October 30, 2014

DUDE, NO ONME ASSOCIATES MEASLES WITH AFRICANS:

Why you should worry less about Ebola and more about measles (William Moss, 10/30/14, The Conversation)

The fact is, in the United States the risk of infection with measles virus or death from influenza virus is far greater.

Although the outbreak in West Africa is increasing exponentially, Ebola is not as contagious as many other infectious diseases. Transmission requires direct contact with infected body fluids. Measles, influenza and pertussis (whooping cough) on the other hand, are spread by respiratory secretions. They are much more explosive because transmission does not require direct contact with an infected person.

The speed with which an outbreak grows depends on how many additional people are infected by each infectious case and the time interval between infections. To put the current Ebola numbers in context, one person with Ebola will on average infect only 1.5 to 2.2 additional people. The relatively low number of people infected by a single case should make it easier to interrupt transmission. Further facilitating control is the fact that a person with Ebola is most infectious after the onset of signs and symptoms.

By contrast, a person with measles is infectious for several days before they become sick. And a person with measles will on average infect 12 to 18 additional people. This year 594 measles cases have been reported in the United States through September 29th, the most in two decades. These cases represent 18 measles outbreaks in 22 states.

An estimated 122,000 people - mostly children - worldwide died of measles in 2012, about 330 measles deaths every day. In the US the increasing number of measles cases is mostly due to people visiting countries with measles outbreaks and carrying the virus back home and into communities in which large numbers of people are not vaccinated.

Posted by at October 30, 2014 6:34 PM
  

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