Ultimately, all coronavirus deaths are connected to Wuhan, but that’s not what UCSF microbiologist Dr. Charles Chiu means. He’s talking about different strains of the virus which can be detected with gene sequencing. So, for instance, the original Wuhan strain of the virus can be differentiated from the strain that formed the first U.S. hotspot in Washington state by looking for specific mutations.Dr. Chiu, who has been studying the outbreak in the Bay Area hasn’t been able to test samples from the three early victims of the disease which Santa Clara officials announced yesterday, so consider this informed speculation:...