HANOI, Vietnam (AFP) — Vietnam has detected four cases of a Covid-19 variant believed to be behind a devastating surge of the virus in India, state media said Thursday. Separately, the country also reported its first community outbreak in weeks on Thursday. Vietnam has so far kept case numbers low — reporting 2,910 of them and 35 deaths — thanks to mass quarantines and extensive contact tracing. All four of those infected with the B.1.617 […]