NEW DELHI, Aug. 23 -- No new strain of H1N1 has been identified and there is no cause for panic, sources at the Indian Council of Medical Research (ICMR) said on Sunday amid an increase in swine flu cases in Delhi and other parts of the country. The Influenza strains currently circulating are "well matched with the vaccine strains recommended for the Northern Hemisphere", they said. Seasonal influenza, including H1N1, is mostly self-limiting. Common symptoms include fever, cough, headache and body ache, and most people recover with appropriate care and rest. However, young children, elderly persons and individuals with underlying medical conditions may be at greater risk of complications, the sources said. The Influenza A (H1N1) pdm09 virus...