With no new human cases reported since May 8, the H7N9 avian influenza outbreak appears to have slowed, but scientists have confirmed the pathogen has evolved since it was first detected in March and is closer to being easily transmissible between humans. Most infected people contracted the disease through contact with live poultry. Closing certain markets and culling birds has helped stem the spread of disease. To date, H7N9 is known to have infected 131 people, 36 of whom have died.
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