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The Zika epidemic, which began as a mosquito-borne viral infection and led to severe birth defects, affected far more people than previously thought, new research shows. For the study, researchers analyzed data from 15 countries and territories in South America, Central America, and the Caribbean with a combined population of 507 million, and concluded that they had over 132 million Zika infections between 2015 and 2018. That's far more than the 800,000 infections estimated by the Pan

After administering clot-busting drugs to treat a stroke, using blood pressure cuffs to squeeze each arm might aid recovery, a new, small Chinese study suggests. In the technique — called remote ischemic post-conditioning — the flow of oxygen-rich blood is repeatedly interrupted and restored using blood pressure cuffs on the arms. Earlier studies have found that the technique may prevent tissue damage by helping the body handle changes in blood flow and the damage that may