Part of an online COVID-19 Assignment (since we're under lockdown). There were 2 questions that I couldn't find definite answers for:

1. Initially, health experts believed the mode of transmission was by (blank) but now they believe that the virus is transmitted through/by (blank)

2. Provide an alternative claim as to where the coronavirus originated (other sources claim that the virus did not originate in Wuhan. State the other location). (Hint: Located in a country that was previously hostile towards the United States - not located in SE Asia - exclude North Korea, Iran, Saudi Arabia, and Russia from your search)

I've spent lots of time searching for Q2 but all the sources point to Wuhan.

Thank you very much, fellow user, for any answer that you may provide.