(CNN)Results from trials involving three different coronavirus vaccines released Monday, all showing positive results, with evidence the vaccines can produce immune responses that would be expected to protect people against infection.
It’s also not clear how well the vaccine would perform in older people who are more at risk of severe disease from Covid-19.
‘There’s a long way to go’
“This is a positive result, but again there’s a long way to go. These are Phase 1 studies. We now need to move into larger scale real-world trials, but it is good to see more data and more products moving into this very important phase of vaccine discovery,” Dr. Mike Ryan, executive director of the World Health Organization Health Emergencies Program, said during a briefing on Monday.
“If possible, there’ll be a vaccine being used by the end of the year,” Hill said.
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More vaccine data from Pfizer, BioNTech
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