High-level teams of the Central Government have been rushed to four more states -- Uttar Pradesh, Punjab, Chhattisgarh and Himachal Pradesh -- to help the state governments tackle the Covid-19 situation.All these four states have been either reporting a rise in the number of active cases or demonstrating a rise in daily new cases, the Ministry of Health and Family Welfare said."These three-member teams will visit the districts reporting high number of COVID-19 cases and support the state efforts towards strengthening containment, surveillance, testing, infection prevention and control measures, and efficient clinical management of the positive cases.