The CDC does state in one place that inhalation appears to be the primary route: https://www.cdc.gov/coronavirus/2019-ncov/prepare/transmission.html https://www

The CDC does state in one place that inhalation appears to be the primary route: https://www.cdc.gov/coronavirus/2019-ncov/prepare/transmission.html https://www.cdc.gov/coronavirus/2019-ncov/prepare/transmissi... It says surface -> hands -> mucous membrane "is not thought to be the main way the virus spreads". But then again, the TTL of the virus on surfaces is still not certain, so, as also noted there "we are still learning how it spreads".