白宫网站翻炒新冠病毒“实验室泄漏”，国家卫健委发声

Group 1 - The article emphasizes that the recent claims by the U.S. regarding the origin of the COVID-19 virus being linked to a laboratory leak in Wuhan lack scientific basis and are considered fabricated [1] - It highlights that the U.S. has repeatedly attempted to politicize the scientific issue of the virus's origin, which has been met with skepticism from the scientific community [1] - The article suggests that evidence increasingly points to the virus having appeared earlier in the U.S., calling for further investigation into the origins of the virus within the U.S. [1] Group 2 - The article urges the U.S. to cease its smear campaigns against China and to address its own issues regarding the pandemic [1] - It calls for accountability from the U.S. to the global community regarding the handling of the COVID-19 situation [1]