NEW DELHI : A report prepared by the National Control for Disease Control (NCDC) has cautioned that the national Capital needs to gear up to tackle the surge of 15,000 COVID-19 cases per day in upcoming winters and festivals.The report has highlighted three reasons to worry that may cause excessive pressure on healthcare services. (i) winter months that make respiratory illnesses severer; (ii) patients may come from outside Delhi in large numbers; (iii) patients coming from distant areas are likely to be more serious.