Hyderabad: 25 cases of swine flu were reported in various corporate hospitals in Andhra Pradesh, after which the state government has put the health authorities on alert.

 "Some of the cases tested positive for swine flu," health authorities told Chief Minister N Kiran Kumar Reddy at a review meeting here on Thursday.

The Chief Minister's Office said in a release that the health authorities were directed to be on a high alert to prevent spurt in swine flu cases by initiating precautionary measures.

 The Chief Minister directed the Principal Secretary (Health) to constantly monitor the situation and keep required testing equipment and medicines ready, the release added.