Regularly updated travel information for all countries with regards to Covid-19 related entry regulations, flight bans, test and vaccines requirements is available on TravelDoc Infopage. To find information about the current travel regulations, including health requirements, it is also advised to consult Travel Regulations Map provided and updated on a daily basis by IATA.
For the general overview of the financial measures undertaken by Hong-Kong in response to the pandemic, refer to the portal of the Hong Kong Monetary Authority.