Just to fill you in, regardless on which vaccine you take, you can still get infected and transmit. The role of the vaccine is to minimise the symptoms, mainly to prevent death or major lung fibrosis, but death still may happen to vaccinated people with preexisting conditions that weaken their immune system. A vaccinated person with COVID-19 should still need to isolate because even if you won’t die, you may infect and kill someone who is immuno-suppressant . So TVB is right to halt work until the pandemic is under control.