LONDON—The euro zone’s economic recovery stuttered in December as a renewed wave of COVID-19 infections curtailed growth in the bloc’s dominant service industry, a survey showed on Wednesday, and could weaken further if tighter restrictions are imposed. As the Omicron coronavirus variant spread rapidly at the end of last year governments reimposed measures to contain infection rates, particularly in Germany, Europe’s largest economy. That meant IHS Markit’s Composite Purchasing Managers’ Index (PMI), a good gauge of overall economic health, sank to 53.3 in December from 55.4 in November, its lowest since March. While the final reading was below an earlier 53.4 “flash” estimate it did hold above the 50 mark separating growth from contraction. “The final Composite PMIs for December confirm that the euro zone economy ended 2021 on a weak note. The economy lost momentum at the end of last year but still appeared to be expanding,” said Jack …