State-run hospitals in New Delhi are overrun with feverish patients, municipal spokesman Y.S. Mann said.
"There is a sense of panic. People insist on hospitalization even if symptoms are mild," he said.
Still, the number of dengue cases recorded in Delhi are the highest in five years. At least 1,872 patients have tested positive for the illness this year so far, compared to 1,695 in 2010, Mann said. Seven of them have died in recent weeks.
Television footage showed patients sharing beds in government hospitals as New Delhi chief minister Arvind Kejriwal made surprise checks at crowded wards.
His inspections came after national media ran the story
of a six-year-old boy who died from a suspected case of dengue fever. Several city hospitals, his father said, refused treatment to his child, citing a shortage of beds.
Last week, a seven-year-old boy also died for want of treatment. Unable to bear the loss, his parents killed themselves by jumping from the roof of their rented four-storeyed house, police said.
Authorities say they have ordered hundreds of more beds to accommodate the surge of patients in government hospitals, which provide free treatment. They also mandated
private hospitals to not turn away anyone requiring admission.
Nationally, India recorded 75,808 dengue fever cases in 2013 and 40,571 in 2014, according to the health ministry.
But independent researchers say the disease is vastly under-reported. According to a study
by Brandeis University in Massachusetts last year, India had six million annual clinically diagnosed dengue fever cases between 2006 and 2012.
The study also pegged the cost of dengue fever treatment in India at $548 million per year.
Even without an outbreak, New Delhi's four major federal-funded hospitals are stretched by the thousands of patients that visit them everyday. The dozens of other state and municipal level hospitals in the city also suffer from overcrowding.
With an estimated 25 million inhabitants, Delhi is now ranked the world's second most populous city after Tokyo, according to a 2014 UN report