‘Asymptomatic persons with the coronavirus disease are more common than was previously thought - some research says potentially as many as 55 per cent to 70 per cent of infections - and they can go on to infect others without anyone ever finding out. It is one of three reasons that make Covid-19 such a challenging disease to tackle, National Centre for Infectious Diseases executive director Leo Yee Sin told The Straits Times yesterday.’
The other two reasons: (1) high virus secretion at its onset (2) as Sars-CoV-2 is a novel pathogen, the whole of Singapore is susceptible to it.
Read here (Strait Times, April 14, 2020)
