1. As far as I know, COVID-19 outbreak in China was announced to have started in November 2019 and not December 2019.
2. (a) Action against any outbreak any of a disease is guided by the IHR 2005 (International Health Regulations 2005) of the World Health Organisation (WHO). It is not done at the whim of a country. In following IHR 2005, the WHO only declared PHEIC (Public Health Emergency of International Concern) on the 30th January 2020.
3. I have already stated that there was no announcement of an ourtbreak of COVID-19 in December 2019.
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