Hints and tips:
...than the Delta variant, and current vaccines may be less effective against it.”...
...The Alpha strain was first discovered in the UK, while the Gamma strain was first identified in Brazil....
...Subsequent variants will be known as Beta (South Africa), Gamma (Brazil) and Delta (India)....
...Nujiang is paired with Zhuhai, an industrial city in the Pearl River delta....
...The Nu becomes the Salween and forms the border between China and Myanmar....
International Edition