https://nextstrain.org/ncov has been updated with 6 new genomes sampled from Guangdong shared by the Guangdong Provincial Center for Diseases Control and 3 new genomes sampled from Wuhan shared by Institute of Pathogen Biology, Chinese Academy of Medical Sciences.
We now observe clustering of related infections. These are a cluster of two infections in Zhuhai (Guangdong/20SF028/2020 and Guangdong/20SF040/2020) and a cluster of three infections in Shenzhen (Guangdong/20SF013/2020, Guangdong/20SF025/2020, Guangdong/20SF012/2020). These are noted in GISAID as “family cluster infection” and reflect two separate family clusters (https://twitter.com/JingLu_LuJing/status/1220143773532880896). This almost certainly represents human-to-human transmission.