NEW DELHI : The Union Health Ministry on Tuesday issued guidelines for the management of co-infection of COVID-19 with other seasonal epidemic-prone diseases such as dengue, malaria, seasonal influenza (H1N1) and chikungunya.The ministry said that a high index of suspicion must be maintained for epidemic-prone diseases prevalent in a particular geographic region during monsoon and post-monsoon seasons.Bacterial co-infections must also be suspected in moderate or severe cases of COVID-19 not responding to treatment.The ministry stressed that tests recommended by the ICMR for COVID-19 and those recommended by the programme divisions for vector-borne diseases such as malaria, dengue and chikungunya and the NCDC for seasonal influenza,.