Scientists are still testing COVID-19 vaccines to beat the pandemic. More new vaccines show good results. After testing, data showed they triggered immune responses in the volunteers. Immune responses protect people against infections.

The Oxford University and AstraZeneca COVID-19 Vaccine

CNN reports the University of Oxford and AstraZeneca developed one of the vaccines. Their product triggered an immune response in their subjects. However, more study is needed. Scientists have moved on to Phase 2 and 3 of the trial. The WHO says they now need to move to large-scale real-world trials. If they succeed, AstraZeneca says they have prepared 2 billion vaccine doses.

The CanSino Biologics COVID-19 Vaccine

CanSino Biologics also developed a vaccine that showed positive results. It is a Chinese company. Their trial involved over 500 people in Wuhan, China. After Phase 2, the test showed excellent results. Around 95% of the subjects who received high doses showed immune responses. Meanwhile, 91% of people who received low doses did the same. 

The scientists are working on Phase 3. 

The Pfizer and BioNTech COVID-19 Vaccine

Next, Pfizer and BioNTech reported that their vaccine got an immune response in Phase 1 and 2 of their study. The results of the German study were similar to those from the US study. For the German trial, scientists involved 60 healthy adults from 18 to 55 years old. They received different vaccine doses.

Despite the good news, though, we still need to find out how long the vaccine works. Scientists also need to consider its effects on different people. The WHO said there are 23 vaccine candidates under testing.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.