加拿大没保住“麻疹消除国”地位，美媒：美国未来或也丧失

Group 1 - Canada has lost its status as a "measles elimination country" due to the ongoing spread of the same strain of the measles virus for over a year, with over 5,100 reported cases and two deaths [1] - The resurgence of measles in Canada is closely linked to insufficient vaccination coverage, with 88% of cases occurring in unvaccinated individuals and only 5% having received two or more doses of the vaccine [1] - The Pan American Health Organization (PAHO) has highlighted the importance of promoting vaccination, noting that vaccination rates in the Americas were only 79% last year, which is still considered too low [2] Group 2 - The Americas region has experienced repeated outbreaks of measles, with significant outbreaks occurring in Venezuela and Brazil from 2018 to 2019, and it was not until 2024 that the region was declared "measles-free" again [2] - The United States is at risk of losing its "measles elimination country" status, with nearly 12,600 cases reported this year, a 30-fold increase from the previous year, primarily concentrated in Canada, the U.S., and Mexico [1] - The Centers for Disease Control and Prevention (CDC) reported 44 outbreaks of measles in the U.S. this year, involving over 1,600 confirmed cases, with only nine states remaining free of measles outbreaks [1]