Chinese officials said on Thursday that they were shocked and offended by a World Health Organization proposal to further investigate whether the coronavirus emerged from a lab in Wuhan, exposing a widening rift over the inquiry into the origins of the pandemic.Senior Chinese health and science officials pushed back vigorously against the idea of opening the Wuhan Institute of Virology to renewed investigation after the W.H.O. director-general, Dr. Tedros Adhanom Ghebreyesus, laid out plans to examine laboratories in the central city of Wuhan, where the first cases of Covid-19 appeared in late 2019.Zeng Yixin, the vice minister …
