NIGERIA will start vaccine booster shots from next week for COVID-19, a senior official said, after the country confirmed its first cases of the Omicron variant among two travellers who arrived from South Africa last week. Faisal Shuaib, executive director of the National Primary Health Care Development Agency, said booster shots will be available from December 10 to those that have been fully vaccinated. Only 2.9% of Nigerians eligible to get vaccines have been inoculated so far. First reported in southern Africa a week ago, Omicron -- the mutated coronavirus variant that poses a high risk of infection -- has…