Second wave means it comes from somewhere else, we haven’t heard anything about a new wave from Asia...yet.
No second wave except for the seasonal flu.
HFMD next...’
“0Hand, foot and mouth disease (HFMD) is an emerging infection with pandemic potential. Knowledge of neutralizing antibody responses among its pathogens is essential to inform vaccine development and epidemiologic research.”
https://wwwnc.cdc.gov/eid/article/26/2/19-0721_article