Breakthrough COVID-19 cases are more common and severe in people with weakened immune systems, according to a new study. Breakthrough infections are those that occur in vaccinated people. Immunocompromised vaccinated people were three times more likely to contract COVID-19, the disease caused by the CCP (Chinese Communist Party) virus, according to researchers, who published their findings in the Journal of Medical Economics. The study found that just 0.08 percent of fully vaccinated people had a breakthrough case, but that 0.18 percent of immunocompromised people had a breakthrough infection. While immunocompromised people represented 18 percent of those studied, they accounted for over 38 percent of infections, nearly six in 10 hospitalizations, and all the deaths. Researchers analyzed nearly 1.2 million U.S. HealthVerity database records between Dec. 10, 2020, and July 8. The study was conducted by Pfizer scientists and funded by the company, which makes one of the three COVID-19 vaccines available in …