Covid vaccination campaign in January when it hopes virus shots will be approved and available.The government is worried that millions of French people will refuse coronavirus shots, even after a vaccine was found to be nearly 95% effective on Monday, bringing optimism to a world facing surging infections and a raft of new stay-at-home orders.US biotech firm Moderna on Monday claimed 94.5% effectiveness in a clinical vaccine trial with more than 30,000 participants, after US pharmaceutical company Pfizer and its German partner BioNTech said last week that their vaccine was 90% effective.According to the World Health Organization, some 42 "candidate vaccines" are currently undergoing clinical trials."We're preparing a vaccination campaign to.