vaccine efficacy
- Covid-19 News
Omicron unlikely to be more severe or to fully evade vaccines: WHO
It’s early days, but the World Health Organisation has sounded a note of very cautious optimism about the Omicron Covid-19 variant. According to an AFP report, the WHO emergencies director Michael Ryan says early data shows the mutation is no more severe than earlier variants and unlikely to fully dodge vaccine protection. However, Ryan cautions that it’s still too soon…
- Covid-19 News
Pfizer Vaccine protection after 6 months: Covid 47%, Hospitalisation 90%
New data this week shows that the Pfizer vaccine which has proven to be 88% effective against Covid-19 dropped to just 47% efficacy six months after the second dose. The report published Monday in the Lancet public medical journal had originally been released in August before being peer-reviewed, and lays clear the need for booster shots as efficacy drops. Data…
- Covid-19 News
Efficacy of mRNA vaccines drops to 66% against Delta variant – US study
A large study carried out by the US Centres for Disease Control and Prevention shows that the efficacy of mRNA vaccines drops from 91% to 66% against the Delta variant. The study involved thousands of healthcare staff and other frontline workers across 6 states. Participants were tested once a week and tested again if they developed Covid-19 symptoms, thereby allowing…
- Covid-19 News
Government says Sinovac works, despite claims of lower efficacy against variants
Amid growing calls for more mRNA doses to combat the spread of the Delta variant, the Thai government continues to defend the Sinovac vaccine. The Bangkok Post reports that the government plans to purchase another 12 million doses of the Chinese vaccine, citing good results from a study of people fully vaccinated with Sinovac. However, the public is calling on…
- Covid-19 News
Study shows antibodies drop by 50% every 40 days after 2 doses of Sinovac
A study carried out by the faculty of medicine at Thammasat University and the National Centre for Genetic Engineering and Biotechnology has found that antibodies halve every 40 days after 2 doses of the Sinovac vaccine. Researcher Anan Jongkaewwattana says 500 people who received both doses of the Chinese vaccine took part in the study. The findings confirmed that their…
- Covid-19 News
Pressure mounts for effective boosters as fully vaccinated nurse dies of Covid-19
The government is coming under increasing pressure to provide effective vaccine boosters to frontline medical staff, following the death of a nurse who’d received 2 doses of Sinovac. The Bangkok Post reports that the 30 year old nurse died a week after contracting Covid-19, despite being fully inoculated. Her cousin, Siwakorn Rattanakuntee, confirmed the death on Facebook, adding that the…
- Covid-19 News
Medical researchers look into combining vaccines to beat Delta variant
Researchers at the Centre of Excellence in Clinical Virology at Bangkok’s Chulalongkorn University are investigating if combining vaccine doses from different brands can boost immunity against the Delta variant. The move comes as Sinovac, the vaccine widely administered in the government’s rollout, shows declining efficacy against the highly contagious mutation first reported in India. Prominent virologist Yong Poovorawan says researchers…
- Covid-19 News
Low immunity levels in some, despite 2 doses of AstraZeneca, Sinovac
A leading medical expert in Thailand has expressed concern that some people who’ve received both doses of either the AstraZeneca or Sinovac vaccine are showing low levels of immunity to Covid-19. According to a Nation Thailand report, Thiravat Hemachudha from the Health Science Centre of Emerging Diseases at Chulalongkorn University says that, 3 or 4 weeks after inoculation, some people…
- Covid-19 News
Chinese study confirms Sinovac vaccine safe for over 60s
Health officials in Thailand say there is no need for concern about use of the Sinovac Covid-19 vaccine the over 60s, after a Chinese study confirmed it is safe. Sophon Mekhton from the Public Health Ministry says the independent study should reassure everyone about the vaccine’s safety in the older age group. According to the Bangkok Post, the study also…
- Covid-19 News
Tests confirm Sinovac, AstraZeneca effective at stimulating immune response
Tests at Bangkok’s Chulalongkorn University have confirmed the efficacy of both the Sinovac and AstraZeneca Covid-19 vaccines. Renowned virologist, Yong Poovorawan, says both vaccines proved successful at stimulating an immune response against Covid-19. The tests were carried out as part of a study done by the university’s Centre of Excellence in Clinical Virology. Yong says that people given the first…
- Covid-19 News
Virologist urges government to carry out mass vaccination within 3 months
Prominent Thai virologist Dr. Yong Poovorawan is calling on the government to carry out mass vaccination of the population within 3 months, after a study showed that 1 dose of the AstraZeneca vaccine boosts immunity by more than 96%. Dr. Yong has been a persistent critic of the Thai government’s handling of the Covid outbreaks in the country. Posting on…
- World News
Novavax says vaccine 100% effective at preventing severe illness, hospitalisation
The US firm Novavax says trials on its Covid-19 vaccine have shown it to be 100% effective at preventing serious illness, hospitalisation or death from the virus. However, the efficacy rate fell sharply against mild to moderate cases of the South African variant. The Bangkok Post reports that one phase 3 trial took place in the UK and included 15,000…
