The presence of asymptomatic carriers is well known in the COVID‑19. These carriers play a
significant role in the disease transmission. Little is known about its magnitude, types …

Background: Comprehensive studies on transmission from asymptomatic patients are
difficult to conduct, as they require testing of large population cohorts and more data are …

Introduction: Several cases of asymptomatic infections of COVID-19 being reported by
several countries in this pandemic and with the recent conflicting information of …

With the presence of Coronavirus Disease 2019 (COVID-19) asymptomatic infections
detected, their proportion, transmission potential, and other aspects such as immunity and …

Following a containment phase of two months, China has transitioned to the mitigation
phase. However, China still faces the risk of COVID-19 spreading due to not only to sporadic …

A novel coronavirus first discovered in late December 2019 has spread to many countries
around the world. An increasing number of asymptomatic patients have been reported and …

Purpose The COVID-19 pandemic has led to over 92 million cases and 1.9 million deaths
worldwide since its outbreak. Public health responses have focused on identifying …

Asymptomatic cases of SARS-CoV-2 can be unknown carriers magnifying the transmission
of COVID-19. This study appraised the frequency of asymptomatic individuals and estimated …

Asymptomatic but infectious people have been reported in many infectious diseases.
Asymptomatic and pre-symptomatic carriers would be a hidden reservoir of COVID-19. Aim …

Background Presymptomatic COVID-19 patients have been identified as a major stumbling
block in efforts to break the chain of transmission. Studies on temporal dynamics of its …