Originally Posted by percysmith

I think the best we can hope for is being allowed to travel with full, up-to-date vaccinations, 4X testing like the bubble, movement restrictions when in visiting country, hotels that have to administer tests every 7 days and/or Australian-style arrival caps (hopefully the new BAU will remove caps from all citizens and permanent residents).

Originally Posted by freed0m

Good luck with contact tracing. Most countries can't implement a proper contact tracing mechanism, let alone ask people to follow it. short leisure travel will be dead following this.

Originally Posted by Gongzuokuang

Thanks. Here in the USA, there are similar rare cases of vaccinated people getting infected. That's why they don't claim it's 100%. This is what is most interesting: "His ministry this week locked down four wards at Tan Tock Seng Hospital, one of Singapore’s largest, after 13 infections there were linked to a Filipino nurse who had been fully vaccinated, yet still tested positive for the virus on Tuesday." It's not very detailed reporting. I wonder if it was direct contact with her, or, if she infected a few, who then infected a few. If she did infect 13 people then it would almost suggest that she wasn't taking standard protocols -- such as wearing a mask or using hand sanitizer -- because health care workers would typically wear PPE to protect themselves and others.

Sadly, it also didn't say which brand of vaccine she used.

Originally Posted by sbs2716g

the hospital staff were getting pfizer. We have cases for migrant workers, nurse , doctor n care staff who are vaccinated getting infected. It was damn lucky that the nurse was symptomatic. Or else this won’t be discover at all.

But HKG is excluding testing for all maids who have been fully vaccinated in the current testing for all maids. Seem like they are assuming that those who are vaccinated won’t get it.

As moderna only start in Mid March onwards n was offered to the general public.

Originally Posted by sbs2716g

the hospital staff were getting pfizer. We have cases for migrant workers, nurse , doctor n care staff who are vaccinated getting infected. It was damn lucky that the nurse was symptomatic. Or else this won’t be discover at all.

But HKG is excluding testing for all maids who have been fully vaccinated in the current testing for all maids. Seem like they are assuming that those who are vaccinated won’t get it.

As moderna only start in Mid March onwards n was offered to the general public.

Originally Posted by Reply1984

I am interested in another question: will an infected but vaccinated person transmit the virus to others? If yes, then how fast it can transmit the virus to others compared to those unvaccinated people?

Originally Posted by Reply1984

I am interested in another question: will an infected but vaccinated person transmit the virus to others? If yes, then how fast it can transmit the virus to others compared to those unvaccinated people?

Originally Posted by freed0m

high chance that symptomatic but vaccinated person will transmit the virus.

These sub-sub data point will take a long while to prove.

Originally Posted by MSPeconomist

Could the nurse have been vaccinated in the Philippines? With what vaccine? Does Singapore accept proof of vaccination in such circumstances, even for health professionals?

Originally Posted by percysmith

My understanding is Biontech blocks 94% asymptomatic 97% symptomatic https://www.reuters.com/article/heal...-idUSKBN2B31IW

And Sinovac is 67% symptomatic https://www.reuters.com/business/hea...on-2021-04-16/ (asymptomatic unknown)

And both symptomatic and asymptomatic can transmit the virus. Hence the 94% figure is so encouraging. But it's not 100% as the Singapore nurse shows.

Originally Posted by brunos

The fact that BioNtech prevents over 90% of serious disease effects (hospitalization mostly) for current variants has been documented in several observational studies.
The Reuters quote that BioNTech blocks 94% of symptomatic cases is incorrect as discussed in other posts. This is just a statement by a media-friendly discussant that is not borne by the fact reported in that Israeli study. Little current scientific data on asymptomatic efficacy benefits for for vaccinated people and zero for potential transmission.

Originally Posted by brunos

The Reuters release dates 19 February and refers to two studies that are old on covid time scale.
The studies conclude on infection rates, but say very little, if anything, on transmission.

Michal Linial is a favorite of the media for her provocative optimistic public forecasts. For example, she asserted that covid immunity was long lasting.

Originally Posted by percysmith

My understanding is Biontech blocks 94% asymptomatic 97% symptomatic https://www.reuters.com/article/heal...-idUSKBN2B31IW

And Sinovac is 67% symptomatic https://www.reuters.com/business/hea...on-2021-04-16/ (asymptomatic unknown)

And both symptomatic and asymptomatic can transmit the virus. Hence the 94% figure is so encouraging. But it's not 100% as the Singapore nurse shows.

Originally Posted by percysmith

Assuming asymptomatic is lower than the general average, all bets are off for claiming (close to) sterilising immunity.

Originally Posted by HKGglobaltrotter

It has already been reported by multiple people arriving from US this morning (May 7th) on FB quarantine support group that fully vaccinated individuals have their quarantine period adjusted/reduced to 14 days at the hotel (instead of 21) follows by 7- day home monitoring (this is not home quarantine FYR). The new policy is kicking in but government hasn't formally announced.

The government news website did mention the quarantine adjustment plan but no start date - news link below (per May 5):
https://www.news.gov.hk/eng/2021/05/...doBcRVH8vdM4WY