Updated Feb 25, 2021 | 10:35 IST The trend is visible at Bowring and Lady Curzon Hospital as well. There is a rise in patients with cold and cough over the last week. Bengaluru doctors warn of second Covid wave as common cold cases increase | Photo Credit: AP Bengaluru: Doctors are saying that cold and cough incidences are increasing in the city. They are not ruling out the chances of Covid infection, although the main reason might be sudden rain and fall in temperature. If the fever stays for over three days and is accompanied by body pain, people must get a Covid test done, according to the doctors. There has been a 10% increase in fever cases over the last week.