(Reuters) -Authorities around the world are imposing or considering curbs on travellers from China as COVID-19 cases there surged following its relaxation of “zero-COVID” rules. China has rejected criticism of its COVID data. PLACES IMPOSING CURBS UNITED STATES The United States will impose mandatory COVID-19 tests on travellers from China beginning on Jan. 5. All air passengers aged two and older will require a negative result from a test no more than two days before departure from China, Hong Kong or Macau. The Centers for Disease Control and Prevention said U.S. citizens should reconsider t…