16 of 20 Most Vaccinated Countries Very High or High Risk for Travel, Says CDC。CDC建议游客去这些国家前要全接种；问题是，那些高风险国家已经高比例全接种了，外来的游客也全接种又能给自己提供什么保护呢？
jackliu8688(Jack)
CDC ranks 16 of the 20 most vaccinated countries as high or very high risk for travel, indicating waning vaccine efficacy, yet still recommends vaccines for all travelers.
枫下家园 / 医药保健 / 16 of 20 Most Vaccinated Countries Very High or High Risk for Travel, Says CDC。CDC建议游客去这些国家前要全接种；问题是，那些高风险国家已经高比例全接种了，外来的游客也全接种又能给自己提供什么保护呢？
-jackliu8688(Jack);
2021-8-16{639}(#13923580@0)+3
CDC ranks 16 of the 20 most vaccinated countries as high or very high risk for travel, indicating waning vaccine efficacy, yet still recommends vaccines for all travelers.
