In closely watched unfolding pandemic developments, New Zealand today aired suspicions that surface contamination may have triggered a new cluster of COVID-19, and China's media reported a reinfection in a woman who was sick 6 months ago.The global COVID-19 total today climbed to 20,439,274 cases, and 745,229 people have died from their infections, according to the Johns Hopkins online dashboard.New Zealand eyes freight connection, confirms one more caseFollowing the detection of its first cases in 102 days, a 4-person family cluster, New Zealand officials are trying to pinpoint the virus source and are examining the possibility that it was imported by freight, Reuters reported.