India's capital region of Delhi ordered a six-day lockdown on Monday as daily COVID-19 cases nationwide hit a new record and the health system crumbled under the weight of new infections.
India's hospitals are struggling with a shortage of beds, oxygen and key medicines as infections pass the 15 million mark, second only to the United States.
Fewer than 100 critical care beds were available in the city of New Delhi, with a population of more than 20 million people, Chief Minister Arvind Kejriwal said on Sunday, as social media was flooded with complaints.
Daily COVID-19 cases in India jumped a record 273,810 on Monday. Deaths rose a record 1,619 to 178,769.
Delhi goes into lockdown on Monday night.
Criticism has mounted over how Prime Minister Narendra Modi's administration has handled India's second wave of the pandemic, with religious festivals and election rallies being attended by thousands.
Leaders including Home Minister Amit Shah are set to hold further road shows and public meetings on Monday.
Opposition Congress leader Rahul Gandhi - who has also addressed election rallies in recent weeks - said on Sunday he was suspending all his public rallies in West Bengal, which is in the middle of elections.
As of Monday, India had administered nearly 123.9 million vaccine doses, which is the most in the world after the United States and China, though it ranks much lower in per capita vaccination


Hong Kong court finds tycoon Jimmy Lai guilty in landmark security trial
Flash floods kill at least 37 people in Morocco's Safi province
School bus accident in Colombia kills 17, injures 20
Australia plans tougher gun laws after father and son kill 15 at Bondi Beach
Police to release man detained over Brown University mass shooting
Shooting at Australia's Bondi Beach kills 12
Police hold person of interest after Brown University shooting leaves two dead
Hamas says Israel's killing of senior commander threatens ceasefire
