“Conclusions from real-world data collated by the U.K. Health Security Agency shows that Pfizer’s and Moderna’s vaccines were only 10 percent effective at preventing symptomatic infection, 20 weeks after the second dose, even as they continued to protect against severe disease, CNBC reported.

Booster doses increased the effectiveness of the vaccines in preventing symptomatic infection to up to 75 percent. … Pfizer CEO Albert Bourla on Monday said a vaccine that targets the omicron variant of Covid will be ready in March, and the company’s already begun manufacturing the doses.”

https://www.cnbc.com/2022/01/10/covid-vaccine-pfizer-ceo-says-omicron-vaccine-will-be-ready-in-march.html?fbclid=IwAR06EPVfioHnbw6QOtoJFy7RBPs_d7Scx5Xyw5PTxevHvQE9tKmhRPOunCA