SHANGHAI, May 27 (Reuters) - Mainland China reported 19 new COVID-19 cases for May 26, up from 13 cases a day earlier, the country's national health authority said on Thursday.

Two of the new cases were local infections in the southern province of Guangdong, the National Health Commission said in a statement. The rest were imported infections originating from overseas.

The number of new asymptomatic cases, which China does not classify as confirmed cases, rose to 22 from 13 cases a day earlier.

The total number of confirmed COVID-19 cases in mainland China now stands at 91,038, while the death toll remains unchanged at 4,636. (Reporting by Jing Wang and Andrew Galbraith; Editing by Christopher Cushing)