on tuesday the cdc's vaccine advisers will consider whether to authorize the pfizer vaccine for children as young as 5 after the food and drug administration signed off on friday. if the cdc's panel and the agency's director approve, vaccinations could begin immediately. well, covid concerns have temporarily shuttered a major amusement park in china. shanghai disneyland announced sunday the park will be closed for at least the next few days after reports someone with a confirmed case of covid-19 visited. this video from sunday shows medical workers and police officers inside the park. officials say guests were required to take a covid test before they left. and cnn's stephen jung joins us from beijing with the very latest. good to see you. talk to us about this lock down, very serious and in response to just one confirmed case.