Updated: December 12, 2020 3:50 AM IST
Geneva [Switzerland]December 12 (ANI / Sputnik): The World Health Organization (WHO) is encouraged by the increase in the number of COVID-19 vaccines that have performed well in clinical trials, although the organization remains concerned due to the currently limited number of doses. available, Bruce Aylward, WHO’s senior adviser, said Friday.
A handful of COVID-19 vaccine candidates have reported efficacy levels of greater than 90 percent in clinical trials, and Aylward noted that multiple vaccine platforms have shown strong results.
“If you look at the number of companies that are announcing positive results in terms of vaccine efficacy every week, that number is increasing and the important thing is that it is increasing not only in terms of the number of products, but also of the different technologies platforms that are being built on. As we have seen now, there are three different types of technology platforms, as we call them, that have reported very positive efficacy and safety data, “the WHO senior adviser said at a press conference.
Over the past week, US media reported that Pfizer is unlikely to meet its original supply targets for its Covid-19 vaccine, which is produced in conjunction with German company BioNTech, due to supply chain problems. supply.
GlaxoSmithKline and Sanofi also announced Friday that their candidate vaccine will likely not be available until the end of 2021 due to disappointing trial results, with Aylward pointing to the WHO’s concern about the actual number of vaccine doses available.
“But at the same time … there are real challenges with volumes. These are still very, very rare products. And just when some companies are announcing successes, there are others – and we’ve had two in the last few days – that have said they have had challenges with their products, either in terms of the volumes they can produce or in terms of some of the test results, “said the WHO senior adviser.
At the same press conference, the director general of the WHO, Tedros Adhanom Ghebreyesus, expressed his conviction that more countries will begin their mass vaccination programs against the coronavirus disease in the near future. (ANI / Sputnik)