Health officials are making a renewed call for vigilance against bird flu, but some experts are puzzling over why reports of new human cases have stopped. Has the search for cases been weakened by government cuts? Are immigrant farm workers, who have accounted for many of the U.S. cases, more afraid to come forward for […] The post The US Hasn’t Seen a Human Bird Flu Case in Three Months. Experts are Wondering Why appeared first on The Well News…