ATHENS, Greece - Greek lawmakers on Wednesday approved legislation making vaccination for COVID-19 mandatory for all residents aged over 60, to deal with an infection surge and the emergence of the omicron variant.The draft law backed by the center-right government and a center-left opposition party — but rejected by all other opposition parties — targets the country's age group that is most vulnerable to death or intubation from the coronavirus.Some 17% of Greeks aged over 60 have not yet been vaccinated.