Kolkata: The state Health department will soon issue notification to all the Chief Medical Officers of Health in the districts and heads of the district and sub-divisional hospitals to strengthen vigil to look out swine flu symptoms in patients and take precautionary measures.The CMOH in all the districts will be asked to keep an isolation ward in each of the district and sub-divisional hospitals. All the city hospitals have been alerted by the department following a swine flu case Also Read – Rain batters Kolkata, cripples normal lifereported in the state.According to a senior official in the state Health department, there is no need to panic as there is a possibility of a patient being attacked by the H1N1 virus particularly this time of the year.The official also said some directives will also be issued to the district health officials on how to tackle the situation.The district officials will have to report it to the state Health department if any such case is reported under its jurisdiction. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedA senior official of the state Health department said the screening of patients has been strengthened following a swine flu case.”We have discussed the situation with all the top officials of the state-run hospitals and steps are being taken to identify the patients who are down with flue like symptoms. The vigil has been intensified across the state. If a patient is admitted to any hospital with swine flu like symptoms, he/she must be kept in isolation. The situation is completely under control and there is nothing to panic,” the official said. According to the health officials, if the first case is dealt with utmost seriousness and precautions, the spread of the disease can be checked. Every year, one or two cases of swine flu cases are reported during this time of the year.Swine flu is an air-borne infection which spreads fast and easily. There is always a possibility of it getting multiplied in a crowded city like Kolkata.Dr Himadri Mukherjee, a senior physician in the city said crowded places like schools, colleges, auditorium, public transport and shopping malls are the likely places from where the viruscould spread.Since swine flu is a droplet infection, diagnosis should happen and treatment must begin as early as possible.