Gunmen ambush a column of a civilian militia in Loroum, Burkina Faso, killing 41 people. It is one of the deadliest single-day attack against the militia.
Twenty-four more people are found dead after the boat accident off the coast of Analanjirofo, Madagascar, three days ago, bringing the total death toll to 85.
The Kuwaiti Directorate General of Civil Aviation announces that all citizens who wish to travel, but who were fully vaccinated more than nine months ago, must receive a booster dose of the COVID-19 vaccine beginning on January 2.
Singapore suspends new ticket sales for the quarantine-free Vaccinated Travel Lane until January 20 in an attempt to reduce the number of imported cases of the Omicron variant.
Malta reports its first two cases of the SARS-CoV-2 Omicron variant, prompting the health ministry to ban all standing events except for weddings and funerals beginning on December 17 and restrict entry to the hospitality sector and sporting events to only those with a valid vaccine certificate. A 1 a.m. curfew will also be imposed for all businesses beginning on January 17.
Ecuador's Minister of Public Health announces that the COVID-19 vaccination will be mandatory for all citizens over the age of 5 years unless they have a medical exemption due to the spread of SARS-CoV-2 variants and an increase in the number of new cases.
New South Wales reports a record 5,715 cases of COVID-19 in the past 24 hours, with the SARS-CoV-2 Omicron variant becoming the dominant strain in the state. The NSW Government reintroduces mask-wearing in indoor settings, despite the state having a 93.5% vaccination rate.
The Italiangovernment announces a ban of New Year's Eve celebrations as well as all mass gatherings and closes nightclubs and bars until the end of January. The government also agree to reintroduce mandatory mask wearing outdoors and will reduce the validity of vaccine certificate to six months beginning from February 1.
The United States and Japan approve a plan for a joint military operation in response to a possible "Taiwan emergency". The operation would consist of deploying U.S. Marines on the Ryukyu Islands near Taiwan, while the Japan Self-Defense Forces would provide logistical support such as ammunition and fuel supplies.
The Seimas votes 89–17 with 19 abstentions to approve a law that would require MPs to have a health pass, which shows proof of vaccination, a negative test result from the previous 72 hours, or that a person has recovered from COVID-19, in order to attend hearings beginning in January.