A lower level of antibodies against the Omicron virus variant is triggered by COVID-19 vaccines, researchers said in a new study. Using blood samples from people who received two doses of the Oxford-AstraZeneca vaccine or the Pfizer-BioNTech jab, researchers with the University of Oxford found “a substantial fall” in neutralizing antibodies, with evidence of some people failing to have any. “This will likely lead to increased breakthrough infections in previously infected or double vaccinated individuals, which could drive a further wave of infection,” the authors wrote in the preprint study. Omicron is a variant of the CCP (Chinese Communist Party) virus, also known as SARS-CoV-2, which causes COVID-19. The variant was discovered by scientists in South Africa last month, and dates back to at least October, according to genomic sequencing of positive tests. Early studies, including one from Pfizer and its partner, point to primary vaccination regimes having a dramatically lower effect …