A devastating second wave of coronavirus in India has seen hospitals and crematoriums overwhelmed and widespread shortages of oxygen and medicines.
Here's a visual guide to what is happening and what the authorities are doing about it.
There have been record numbers of cases and deaths
Case numbers and deaths in India are continuing to rise fast, fuelled by a new variant.
The country recorded the world's highest single-day total on Thursday.
But the true numbers of cases and deaths are likely to be higher than the numbers provided by authorities, with many people avoiding testing or struggling to access it. Many deaths in rural areas also go unregistered.
Testing is increasing, but so too are the number of positive results.
Last year, the World Health Organization recommended countries needed to get the positive test rate below 5% for at least two weeks before considering easing restrictions. The rate in India is now around 20%.
A high percentage of positive tests suggests high infection rates and the likelihood of many more people in the community with coronavirus undetected, according to Johns Hopkins University.
In total, India has confirmed more than 18 million infections and 200,000 deaths. Virologists say they expect the rate of infections to continue to increase for another two to three weeks.
There are very few critical care beds
The country has a chronic shortage of space on its intensive care wards, with many patients' families forced to drive for miles to try to find a bed for their loved one.
In Delhi - a region of about 20 million people - hospitals are full and are turning away new patients.
Doctors have described how people are dying on the streets outside hospitals as the country struggles to cope.
Some streets outside medical facilities have become crowded with the seriously ill, their loved ones trying to arrange stretchers and oxygen supplies for them as they plead with hospital authorities for a place inside.
"We have been roaming around for three days searching for a bed," one man told Reuters news agency as his wife sat immobile on the pavement.
On Monday, the government announced military medical infrastructure would be made available to civilians and retired medical military personnel would be helping out in Covid health facilities.
There's a shortage of oxygen
Hospitals across India are also experiencing oxygen shortages, with some forced to put up signs warning of a lack of supplies.
The country now has the greatest demand for oxygen out of all other low, lower-middle and upper-middle-income countries, according to the PATH Oxygen Needs Tracker.
Demand has been growing between 6%-8% each day, according to PATH, an organisation that works with global institutions and businesses to tackle health problems.
Dr Harjit Singh Bhatti, who works on a Covid ward of Delhi's Manipal Hospital, described watching people gasping for air in the street like "fish out of water".
"They are not getting oxygen and they are dying on the roads," he said.
Typically, healthcare facilities consume about 15% of oxygen supply in India, leaving the rest for industrial use.
But amid India's second wave, nearly 90% of the country's oxygen supply - 7,500 metric tonnes daily - is being diverted for medical use, according to Rajesh Bhushan, a senior health official.
To try to get supplies to where they are needed, the government has now started an "oxygen express", with trains carrying tankers to wherever there is demand. The Indian Air Force is also airlifting oxygen from military bases.
The government has said it will be releasing oxygen supplies from armed forces reserves and has approved plans for more than 500 oxygen generation plants across the country to boost supplies.
Train carriages have become medical wards
In a bid to tackle the shortage of beds, Indian authorities are turning to train carriages, which have been converted into isolation wards.
About 4,000 Indian Railways coaches, adapted in March 2020, are being brought back into use to to help treat Covid patients with mild to moderate symptoms.
The facilities, which were not needed last year when strict lockdown measures saw cases decline, were able to provide an additional 64,000 temporary beds, Gopal Agarwal, a spokesman for Prime Minister Narendra Modi's Bharatiya Janata Party, told the BBC.
The trains, which can be driven to stations in cities and towns where required, have beds for patients, bathrooms, power points for medical equipment and oxygen supplies.
Under the guidance of PM @NarendraModi ji, Railways is fully prepared to provide COVID Care Coaches to States on demand.— Piyush Goyal (@PiyushGoyal) April 26, 2021
Nearly 64,000 beds in 4,000 coaches at various Railway Stations across the country, can be made available for quick deployment. pic.twitter.com/lliUZjeHWG
Indian Railways already has experience of running hospitals on trains. The Lifeline Express, launched in 1991, travels round the country providing diagnostic, medical and surgical treatment to patients.
Sports halls and stadiums have become hospitals
Sports halls, stadiums and ashrams have also been converted into make-shift treatment centres to ease the pressure on hospitals.
Venues like Bangalore's Koramangala Indoor Stadium, the Indira Gandhi Athletic Stadium, in Guwahati, and Delhi's Radha Soami Satsang Beas campus have been converted into quarantine centres.
Some of the beds being used are made from cardboard.
During a surge in cases last year, the Delhi campus belonging to the Radha Soami Satsang Beas organisation was transformed into the 10,000-bed Sardar Patel Covid Care Centre, with 1,000 "oxygen-supported" beds. It treated more than 11,000 people before it closed in February.
This time the centre - which is the size of 20 football fields - is expected to start with about 2,500 beds, increasing to 5,000.
Aryan Paper, which makes the cardboard bed bases being used, says the emergency beds are made from high-strength corrugated board.
They are particularly useful in the current crisis because they are cheap, recyclable, can be flatpacked for easy transportation and assembled in five minutes.
Crematoriums are organising mass funeral pyres
Many people are being forced to turn to makeshift facilities for mass burials and cremations as India's funeral services become overwhelmed.
At least one facility in Delhi has resorted to building pyres in its car park in order to cope with the number of bodies.
Other sites are holding mass cremations, with staff reportedly working day and night in several cities.
Jitender Singh Shunty, head of a non-profit medical service running a crematorium in north-east Delhi, is using a car park next door to deal with the unprecedented number of bodies.
"It's difficult to watch," he said.
A number of places have also reported running low on wood for pyres.
Jayant Malhotra, who has been helping out at a crematorium in Delhi, told the BBC he had never seen such a terrifying situation.
"I can't believe we're in the capital of India. People aren't getting oxygen and they're dying like animals."
By Lucy Rodgers, Dominic Bailey, Ana Lucia Gonzalez, Shadab Nazmi and Becky Dale.