COVID-19(13) SARS-CoV-2(8) Reproduction number(7) quarantine(5) Analysis(5) coronavirus(5) Intervention(4) mathematical model(4) whole genome(4) approach(4) Isolation(4) identify(4) lowest(3) reduction in(3) childhood viral infections(3) Saliva(3) Probability(3) less(3) Epidemiology(3) Re-exposure process.(3) Local(3) multiplex(3) labeling(3) Bathtub-type principle(3) COVID-19 pandemic(3) Vaccine(3) force of infection(3) Asymptomatic(3) antibody(3) Avian Influenza(3)