By Eamonn Burke
A vaccine developed by The University of Oxford in the UK and major pharmaceutical company AstraZeneca has shown early signs of being a potential success. According to data posted today in The Lancet medical journal, a strong immune response was invoked by early testing of the vaccine in a large human trial of over 1,000 participants.
The vaccine, named ChAdOx1 nCoV-19, produced higher levels of antibodies and T-cells that fight the virus, according to the data. In other words, “We’re stimulating both arms of the immune system,” says Oxford’s head of the Jenner Institute Adrian Hill.
By no means does this data guarantee an effective vaccine, but human testing is a major step in the right direction, especially one with positive results. Another good sign is the lack of serious side effects, with most volunteers only reporting fatigue, headache, and soreness at the injection site. Big questions that remain, however, are how the body will react once infected, and if someone can get infected again.
AstraZenaca has received support from the U.S., pledging $1.2 billion dollars to vaccine work, and from the U.K., who has made a deal for 90 million doses of it. It is one of over 100 being developed globally, with 23 in the human trial phase. One of them is Moderna’s, which also showed promising signs in data last week and is set to start a Phase 3 of development on July 27.