Schoolteacher Shubhi Kwatra, 34, has not attended school for the past three days.
She is down with a severe bout of viral infection that she contracted from her five-year-old daughter Avanti, who studies in the same school.
"I got severe headache and throat infection a couple of days after my daughter fell sick. She had high fever of around 103 degrees and developed a bad cold soon after," she said.
Kwatra suspects her daughter contracted the infection in school as she noticed some of her classmates were also down with similar symptoms.
Due to the humid climate because of rains, viral infections are fast spreading in the city.
"One tends to catch cold after getting drenched in the rain. Once a person develops cold then other symptoms follow soon after," said Dr AB Dey, professor, department of medicine, AIIMS.
Hospitals and clinics in the city are seeing a sudden spurt in the number of people with symptoms such as cold, cough, high-grade fever, sore throat, headache, etc., that are common symptoms of a viral infection.
According to health experts, children, elderly people above 65 years of age and people suffering from asthma need extra care during the season.