Posts Tagged ‘ polio ’

Polio Health Emergency Declared by WHO

Tuesday, May 6th, 2014

The World Health Organization (WHO) has declared polio to be an international health emergency, with ten countries affected by documented outbreak and spreading of the disease.  More from

Especially concerning was the fact that three countries—Pakistan, Syria, and Cameroon—showed higher rates of transmission of wild polio virus to other nations even during the disease’s more dormant period. That raises the possibility that when the virus becomes more active, from April into the summer, transmission rates will peak even more. “If the situation as of today and April 2014 is unchecked, it could result in the failure to eradicate globally one of the world’s most serious vaccine preventable diseases,” Dr. Bruce Ayleward, WHO’s assistant director general for polio, emergencies and country collaboration said during a conference call.

The emergency measures require that residents in the three countries actively exporting polio virus receive a dose of either of the two polio vaccines four weeks-to-12 months before traveling, and that they be provided with proof of their immunization. The remaining seven affected countries are encouraged, but not required, to do the same. The WHO recommended these measures remain in place until countries show no new transmission of polio for six months and evidence of eradication efforts, including immunization programs. While not legally binding, the cooperation of affected countries is expected, Ayleward said. The WHO’s action may also help governments to make polio immunization a priority; in 2009, a similar declaration during the H1N1 pandemic allowed nations to prioritize health care services to protect and treat patients affected by the flu.

Health officials have been getting closer to making polio the second disease, after smallpox, to be eradicated by vaccinating children in countries where the wild virus continues to circulate. But social unrest and political conflict have interrupted immunization programs—some health workers have become targets of violence in Pakistan, for example, while growing populations of displaced residents such as refugees who are without access to health care services also provide fertile conditions for the virus to spread. Seven of the 10 countries now reporting wild polio virus have been successful at eliminating the disease in the past, but have been reinfected in recent years.

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Polio Not on Track for Worldwide Eradication

Thursday, July 21st, 2011

The World Health Organization and other groups have failed to eradicate polio, the waterborne paralytic disease that mostly strikes children under age 5, despite a $1 billion investment and several years of work, news sources are reporting.  According to The Associated Press, the disease is still active in a number of countries, including Afghanistan, Angola, Chad, India, Pakistan and Nigeria.

There is an effective polio vaccine, discovered by Jonas Salk in 1952, but it has not been given consistently to children in those countries, and in some cases has reportedly been disrupted by political corruption, incorrectly administered vaccines, and falsified immunization reports.

In the 1940s and 50s, polio was a common and dreaded childhood disease in the United States, affecting an estimated 35,000 people.  According to the Centers for Disease Control and Prevention, the last naturally occurring case of polio in the United States was in 1979, though a handful of cases have occurred since then, mostly contracted as a side effect of an oral polio vaccine that is not routinely used by pediatricians today.

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