How does one prove a negative? That not getting the flu is proof that a vaccine is effective. Reminder that according to the CDC, efficacy rate was as low as 19% for 2014-2015. Most studies that use placebo as a base measurement have better % efficacy with placebo.
Same principal the China virus mitigation is based on. Healthy people have to stay under house-arrest to prevent people from dying. Another negative impossible to prove.
How does one prove a negative? That not getting the flu is proof that a vaccine is effective. Reminder that according forhenCDC, efficacy rate as was 19% for 2014-2015. Most studies that use placebo as a base measurement have better % efficacy with placebo.
Same principal the China virus mitigation is based on. Healthy people have to stay under house-arrest to prevent people from dying. Another negative impossible to prove.
How does one prove a negative? That not getting the flu is proof that a vaccine is effective. Reminder that according forhenCDC, efficacy rate as was 19% for 2014-2015. Most studies that use placebo as a base measurement have better % efficacy with placebo.
Same principal the China virus mitigation is based on. Healthy people have to stay under house-arrest to prevent people from dying. Another negative impossible to prove.
https://www.webmd.com/cold-and-flu/news/20190628/last-flu-seasons-vaccine-only-29-effective-cdc
CDC data shows 9% vaccine effectiveness for influenza A, virus H3N2 flu shot last year
How does one prove a negative? That not getting the flu is proof that a vaccine is effective. Reminder that according forhenCDC, efficacy rate as was 19% for 2014-2015. Most studies that use placebo as a base measurement have better % efficacy with placebo.
Same principal the China virus mitigation is based on. Healthy people have to stay under house-arrest to prevent people from dying. Another negative impossible to prove.
https://www.webmd.com/cold-and-flu/news/20190628/last-flu-seasons-vaccine-only-29-effective-cdc