Re: Infectious period
No, the article is correct in that a recent report1 by scientists at the University of Auckland (NZ) that showed that the IgG and IgM antibodies only become detectable days after *symptoms* start showing, but that you may be an asymptomatic carrier of the virus (and continue to infect people) for several days *after* the day of infection and *before* becoming symptomatic. The appropriate graph's accompanying notes do point out that people have different responses to infection and as such may develop symptoms quicker or slower (which is why the incubation period is given as 1-14 days with a median of 5). Given a median of 5 (before onset of symptoms), plus at least 48 hours before that, gives you 7 days, but in some cases (for the extreme right of the curve), 14 days of backtracking makes sense. I'd rather tell too many people they should get tested (or go into isolation) than too few and cause another infection bloom, if you follow my meaning.