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The director general of the World Health Organization (WHO) said on Tuesday that he expected to have a COVID-19 vaccine on the market by the end of the year and that the experimental vaccine developed by the US group Pfizer was “very promising” at the same time. . in which other treatments proposed by various manufacturers in the pharmaceutical industry are expected, Reuters reports.
But the Pfizer vaccine, based on a new technology that uses synthetic messenger RNA to activate the immune system against the new coronavirus, brings with it a number of special challenges, as it must be stored at temperatures of at least 70 degrees Celsius. values equivalent to those recorded in winters in Antarctica, writes agerpres.ro.
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WHO Director General Tedros Adhanom Ghebreyesus reiterated calls on the UN agency to ask for a fair distribution of vaccine doses once such treatments are approved and available.
The US group Pfizer announced on Monday that its anti-COVID-19 vaccine is more than 90% effective and published preliminary data from its phase 3 clinical study. Data on the safety of the vaccine, developed in collaboration with the German company BioNTech , to be released later this month.
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“As predicted, we will have a vaccine by the end of this year. And the one developed by Pfizer is very promising,” Tedros Adhanom Ghebreyesus told an annual ministerial meeting organized by WHO.
“And we hope that more vaccines will come out,” he added.
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However, the need to store this vaccine at extremely low temperatures could complicate vaccination programs, especially in regions of Asia and Africa where the climate is hot, distances are long, and the necessary infrastructure is poor or even non-existent.
“The extraordinary news yesterday (not Monday) that a possible effective vaccine will be available poses a number of significant challenges for cold storage in African countries, by the very nature of this vaccine. Support delivery activities”, said Matshidiso Moeti, WHO regional director for Africa, at the same ministerial meeting.
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