China battles mosquito-borne virus with Covid-era methods as U.S. issues travel warning​China battles mosquito-borne virus with Covid-era methods as U.S. issues travel warning 

 CHONGQING, China — For nearly two months, health officials in southern China have been waging war on mosquitos, reviving top-down tactics from the country’s zero-Covid playbook  ​​CHONGQING, China — For nearly two months, health officials in southern China have been waging war on mosquitos, reviving top-down tactics from the country’s zero-Covid playbook