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Health workers say they won't be able to vaccinate all the children they had planned to reach because of ongoing fighting.
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The World Health Organization said a second dose will be crucial in order to stop the spread of the virus in Gaza and internationally.
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Athletes who contracted childhood polio share their stories of how they overcame the consequences of the disease — and what sports means to them.
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Health care workers plan to reach more than 640,000 Palestinian children in a matter of days while Israel has agreed to staggered pauses in fighting.
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The territory hasn't had any polio cases for 25 years but this suggests the virus is spreading. Polio experts are scrambling to figure out the origins and whether or not there are active cases.
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"More than anything, I believe he would want others to know they are capable of great things," Alexander's friend Christopher Ulmer told NPR.
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It was a big year for viruses, which simply refused to be ignored. And unlike the previous two years, COVID had to share the spotlight.
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The highly infectious viral disease can lead to permanent paralysis of the arms and legs and even death in some cases. Health officials are urging people to get vaccinated if they haven't been.
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Children were made eligible for booster doses after health authorities reported finding evidence the virus has spread in multiple areas of London but found no cases of the paralytic disease in people.
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The CDC confirmed that a patient in New York has contracted polio, the first U.S. case since 2013. But most people shouldn't be concerned about contracting the virus because of high vaccination rates.