x***l 发帖数: 315 | 1 Dr. Bruce Aylward, a senior WHO official, warned high levels of transmission
give the virus more opportunity to replicate and mutate, raising the risk
that another variant will emerge.
New infections have increased by 20% globally over the past week with nearly
19 million total cases reported during that period, according to the WHO.
"This pandemic is nowhere near over," WHO Director General Tedros Adhanom
Ghebreysus said | c*******e 发帖数: 5818 | |
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