Informatics for COVID-19 in New York and California

OBJECTIVE: This study explores how social networks for coronavirus disease (COVID-19) are differentiated by regions. METHODS: This study employs a social network analysis for Twitter in New York and California. RESULTS: National key players play an important role in New York, whereas regional key players exert a significant impact on California. Some key players, such as the US President, play an essential role in both New York and California. Hispanic key players play a crucial role in California. Each group is more likely to show communication networks within groups in New York, whereas it is more apt to exhibit communication networks across groups in California. Government players play a different role in social networks according to regions. CONCLUSIONS: Governments should understand how social networks for COVID-19 are differentiated by regions to control the ongoing pandemic effectively.