"One of the interesting things here is that the daughter reported onset of symptoms before the mother. So we have to be open-minded that she could be the first case, and could have got it somewhere else. But he explained that Covid-19 symptoms - and how and when they emerged - were known to vary from person to person. "Someone could be infected and then their peak infectivity develops before they develop symptoms themselves - possibly two and a half days after," he said. "It could have just been a matter of hours between one person being infected, and then them infecting the other person as well."

Source: New Zealand Herald February 16, 2021 01:18 UTC