by 84%. but what happens in europe is often prologue for the u.s. officials are closely watching the numbers across the atlantic. right now in almost every u.s. state, new daily infections are falling dramatically, reaching their lowest levels since the middle last year. 37 million people in china are under a lockdown order in five cities. >> reporter: covid infections have surged. more than 1,000 daily infections over the past five days. china's worst outbreak since wuhan in early 2020. cnn's kristi le lu stout joins . one of the locked down cities is shenzhen. >> reporter: it's very significant happening because it will bring about a significant economic toll for china. we are well into the third year of the pandemic, and china is reporting the significant surge in covid-19 infection. on tuesday, china reported more than 5,000 locally transmitted cases of the virus. that may seem, and it is very low as a number compared to the