This is a really good article by Nate Silver, American statistician. The attached shows the states as he grouped them:
Hasn't peaked.....19 states
Might be peaking......6 states
May be past peak.....20 states
Peaked 3 weeks ago.....6 states
"Additionally, while these social distancing efforts are almost certainly
flattening the curve, the somewhat lax American version of social distancing may not be enough to
bend the curve all on its own. In epidemiological terms, bending the curve means getting
R — the
effective reproduction number — under 1, so that each person who acquires COVID-19 spreads it to less than one new person. If
R is less than 1, a disease will begin to die out , but if it’s
above 1, the disease will keep spreading. And if
R is
near 1, the curve will flatten into a long plateau but not turn downward, which may be the case in some states."
"In short, the United States
desperately needs to work on techniques in addition to social distancing to fight the spread, including better testing, case-tracking, quarantining of sick individuals, and better sanitation and hygiene.
Social distancing has likely been very helpful to slow the spread and, in many states, even reverse it. But if it’s the only tool we’re employing — and it’s a costly tool to wield — it may only be enough to allow us to fight the coronavirus to a draw."
More at link
Coronavirus Cases Are Still Growing In Many U.S. States