"Telling people that you are a “zero” may not get much attention. Telling people that you are a “patient zero”? That’s a different story. Apple co-founder Steve Wozniak, who also goes by the nickname Woz, momentarily caused a stir with the following tweet: Yeah, that’s not going to get zero reaction with the ongoing COVID-19 causing coronavirus (SARS-CoV2) outbreak occurring. The possible suggestion that he and his wife, Janet, may have been the “patient zeros” who brought the new coronavirus to the U.S. got all kinds of responses, ranging from people tweeting that Macs don’t get viruses to those wondering angrily why the Wozniaks took so long to see doctors.A patient zero is the first human to get infected by a pathogen like a virus and then subsequently spread it to others. There can be a patient zero for the overall SARS-CoV2 outbreak, that is the first human to have contracted the virus from a non-human source such as another animal. There can also be patient zeros for outbreaks in different locations, such as the persons who first introduced the virus to each country. It can be very, very difficult to identify who really was the patient zero in each of these cases because that person may have had very non-specific symptoms or even no symptoms at all..."