General Director of Banadir Hospital, Fartun Sharif inspects the medical oxygen cylinder tanks at the public oxygen plant, amid the coronavirus disease (COVID-19) pandemic, at the Banadir Hospital in Mogadishu, Somalia September 28, 2021. Picture taken September 28, 2021. REUTERS/Feisal Omar

Workers arrange empty medical oxygen cylinder tanks at the public oxygen plant, amid the coronavirus disease (COVID-19) pandemic, at the Banadir Hospital in Mogadishu, Somalia September 28, 2021. Picture taken September 28, 2021. REUTERS/Feisal Omar

An information label is seen on packaging for a CO2 cylinder for a fizzy drinks machine in Manchester, Britain, September 20, 2021. REUTERS/Phil Noble

A health worker pushes a chair with an oxygen cylinder, in the infectious diseases department of Dalal Jamm hospital, as Senegal records more COVID-19 deaths in Dakar, Senegal August 5, 2021. Picture taken August 5, 2021. REUTERS/Zohra Bensemra

Medical oxygen cylinders are arranged inside a truck at Hewatele, an oxygen supplying company for distribution to clients amid the coronavirus disease (COVID-19) pandemic, Nairobi, Kenya, August 4, 2021. Picture taken August 4, 2021. REUTERS/Thomas Mukoya

Medical oxygen cylinders are arranged inside a truck for distribution to clients at the Hewatele oxygen plant amid the COVID-19 pandemic, Nairobi, Kenya August 4, 2021.Picture taken August 4, 2021. REUTERS/Thomas Mukoya

Everlyn Muyeyia, chief nurse at the Care Hospital fixes an oxygen cylinder tank for a patient with coronavirus disease (COVID-19) inside the Intensive Care Unit (ICU) ward, Nairobi, Kenya, August 4, 2021. Picture taken August 4, 2021. REUTERS/Thomas Mukoya

Dr. Bernard Olayo, founder of Hewatele, an innovative oxygen supply company,, checks filled oxygen medical cylinder tanks amid the coronavirus disease (COVID-19) pandemic, ahead of delivery to health facilities at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Empty oxygen cylinder tanks are seen arranged amid the coronavirus disease (COVID-19) pandemic, at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Medical cylinder tanks are packed with oxygen amid the coronavirus disease (COVID-19) pandemic, ahead of delivery at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Walter Otieno, plant operator at Hewatele, an innovative oxygen supply company,, arranges empty oxygen medical cylinder tanks amid the coronavirus disease (COVID-19) pandemic, at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Hewatele, CEO Zulfiqar Wali checks as oxygen medical cylinder tanks are filled amid the coronavirus disease (COVID-19) pandemic, ahead of delivery to health facilities at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021.Picture taken August 3, 2021. REUTERS/Thomas Mukoya

James Njeru of Hewatele, an innovative oxygen supply company, walks near a container packed with new oxygen medical cylinder tanks amid the coronavirus disease (COVID-19) pandemic, at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Dr. Bernard Olayo, founder of Hewatele, an innovative oxygen supply company, and James Njeru check filled oxygen medical cylinder tanks amid the coronavirus disease (COVID-19) pandemic, ahead of delivery to health facilities at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

An oxygen medical cylinder tank is seen labeled amid the coronavirus disease (COVID-19) pandemic, at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Dr. Bernard Olayo, founder of Hewatele, an innovative oxygen supply company, and CEO Zulfiqar Wali check empty oxygen medical cylinder tanks amid the coronavirus disease (COVID-19) pandemic, at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Dr. Bernard Olayo, founder of Hewatele, an innovative oxygen supply company, and James Njeru check filled oxygen cylinder tanks amid the coronavirus disease (COVID-19) pandemic, ahead of delivery to health facilities at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Dr. Bernard Olayo, founder of Hewatele, an innovative oxygen supply company, checks filled oxygen cylinder tanks amid the coronavirus disease (COVID-19) pandemic, ahead of delivery to health facilities at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Hewatele CEO, Zulfiqar Wali, regulates a machine as oxygen medical cylinder tanks are filled amid the coronavirus disease (COVID-19) pandemic, ahead of delivery to health facilities at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Walter Otieno, the plant operator at Hewatele, an innovative oxygen supply company, regulates oxygen into medical cylinder tanks amid the coronavirus disease (COVID-19) pandemic, at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

Walter Otieno, the plant operator at Hewatele, an innovative oxygen supply company, arranges empty oxygen medical cylinder tanks amid the coronavirus disease (COVID-19) pandemic, at the Hewatele oxygen plant in Nairobi, Kenya August 3, 2021. Picture taken August 3, 2021. REUTERS/Thomas Mukoya

A health worker prepares to load an oxygen cylinder into an ambulance outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021. REUTERS/Zohra Bensemra

Babacar Gueye, 56, a worker of Molecules gas company prepares offloads oxygen cylinders outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021. REUTERS/Zohra Bensemra

Babacar Gueye, 56, a worker of Molecules gas company stands beside a truck transporting oxygen cylinders outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021. REUTERS/Zohra Bensemra

A truck transporting oxygen cylinders arrives at the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021. REUTERS/Zohra Bensemra

Babacar Gueye, 56, a worker of Molecules gas company prepares to offload oxygen cylinders outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021. REUTERS/Zohra Bensemra

Djibril Diedhieou, 58, a worker of Molecules gas company offloads oxygen cylinders outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021.REUTERS/Zohra Bensemra

A health worker loads an oxygen cylinder into an ambulance outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021.REUTERS/Zohra Bensemra

A health worker checks the delivery of oxygen cylinders outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021. REUTERS/Zohra Bensemra

Djibril Diedhieou, 58, a worker of Molecules gas company sits on a truck that delivers oxygen cylinders outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal July 28, 2021. Picture taken July 28, 2021.REUTERS/Zohra Bensemra

A health worker walks past oxygen cylinders outside the infectious diseases department of the Fann University Hospital in Dakar, amid a surge of coronavirus disease (COVID-19) cases in Senegal, July 28, 2021. Picture taken July 28, 2021.REUTERS/Zohra Bensemra

Oxygen cylinders are seen at a store as demand for oxygen continues to grow amid the coronavirus disease (COVID-19) pandemic, in Bangkok, Thailand, July 17, 2021. REUTERS/Chalinee Thirasupa

An employee wearing a protective mask delivers oxygen cylinders from a store to a field hospital, to help coronavirus disease (COVID-19) patients, as demand for oxygen continues to grow amid the COVID-19 pandemic, in Bangkok, Thailand, July 17, 2021. REUTERS/Chalinee Thirasupa

An employee wearing a protective mask delivers oxygen cylinders from a store to a field hospital, to help coronavirus disease (COVID-19) patients, as demand for oxygen continues to grow amid the COVID-19 pandemic, in Bangkok, Thailand, July 17, 2021. REUTERS/Chalinee Thirasupa

An employee delivers oxygen cylinders from a store to a field hospital, to help coronavirus disease (COVID-19) patients, as demand for oxygen continues to grow amid the COVID-19 pandemic, in Bangkok, Thailand, July 17, 2021. REUTERS/Chalinee Thirasupa

An employee wearing a protective mask delivers oxygen cylinders from a store to a field hospital, to help coronavirus disease (COVID-19) patients, as demand for oxygen continues to grow amid the COVID-19 pandemic, in Bangkok, Thailand, July 17, 2021. REUTERS/Chalinee Thirasupa

A medical worker in Personal Protective Equipment (PPE) pulls oxygen cylinders near temporary tents erected outside the emergency ward for accommodating the lack of beds at a government-run hospital amid the surge of coronavirus disease (COVID-19) in Bekasi, on the outskirts of Jakarta, Indonesia, July 15, 2021. REUTERS/Willy Kurniawan

Medical workers in Personal Protective Equipment (PPE) push oxygen cylinders outside the emergency ward of a government-run hospital amid the surge of coronavirus disease (COVID-19) in Bekasi, on the outskirts of Jakarta, Indonesia, July 15, 2021. REUTERS/Willy Kurniawan

Workers prepare oxygen cylinders at a warehouse of a government-run hospital amid the surge of coronavirus disease (COVID-19) in Jakarta, Indonesia, July 14, 2021. REUTERS/Willy Kurniawan

A Directorate General of Customs and Excise officer stands near an oxygen cylinder, while an Indonesian military official guards the medical supplies sent by the Singapore government amid a surge of coronavirus disease (COVID-19) cases in Jakarta, Indonesia, July 14, 2021. REUTERS/Ajeng Dinar Ulfiana

An officer from the Directorate General of Customs and Excise takes pictures of oxygen cylinders as the Singapore government sent medical supplies amid a surge of coronavirus disease (COVID-19) cases in Jakarta, Indonesia, July 14, 2021. REUTERS/Ajeng Dinar Ulfiana

People wearing protective face masks stand with their oxygen cylinders outside a factory to get them refilled amid a surge of the coronavirus disease (COVID-19) cases in Jakarta, Indonesia, July 12, 2021. REUTERS/Ajeng Dinar Ulfiana

People wearing protective face masks stand with their oxygen cylinders outside a factory to get them refilled amid a surge of the coronavirus disease (COVID-19) cases in Jakarta, Indonesia, July 12, 2021. REUTERS/Ajeng Dinar Ulfiana

People wearing protective face masks stand with their oxygen cylinders outside a factory to get them refilled amid a surge of the coronavirus disease (COVID-19) cases in Jakarta, Indonesia, July 12, 2021. REUTERS/Ajeng Dinar Ulfiana

People wearing protective face masks stand with their oxygen cylinders outside a factory to get them refilled amid a surge of the coronavirus disease (COVID-19) cases in Jakarta, Indonesia, July 12, 2021. REUTERS/Ajeng Dinar Ulfiana

People wearing protective face masks stand with their oxygen cylinders outside a factory to get them refilled amid a surge of the coronavirus disease (COVID-19) cases in Jakarta, Indonesia, July 12, 2021. REUTERS/Ajeng Dinar Ulfiana

Workers refill oxygen cylinders inside an oxygen factory amid a countrywide lockdown due to the coronavirus disease (COVID-19), in Dhaka, Bangladesh, July 8, 2021. REUTERS/Mohammad Ponir Hossain

A worker refills oxygen cylinders inside an oxygen factory amid a countrywide lockdown due to the coronavirus disease (COVID-19), in Dhaka, Bangladesh, July 8, 2021. REUTERS/Mohammad Ponir Hossain

Workers refill oxygen cylinders inside an oxygen factory amid a countrywide lockdown due to the coronavirus disease (COVID-19), in Dhaka, Bangladesh, July 8, 2021. REUTERS/Mohammad Ponir Hossain

Farmers carry LPG cylinders during a protest against the hike in fuel prices, at the Delhi-Uttar Pradesh border in Ghaziabad, India, July 8, 2021. REUTERS/Adnan Abidi

Employees wearing protective masks and scarves lift oxygen cylinders on a pick-up truck at a factory as Indonesia experiences an oxygen supply shortage amid a surge of coronavirus disease (COVID-19) cases, in Jakarta, Indonesia, July 6, 2021. REUTERS/Ajeng Dinar Ulfiana

Employees wearing protective masks and scarves lift oxygen cylinders on a pick-up truck at a factory as Indonesia experiences an oxygen supply shortage amid a surge of coronavirus disease (COVID-19) cases, in Jakarta, Indonesia, July 6, 2021. REUTERS/Ajeng Dinar Ulfiana

Employees stand among oxygen cylinders at a factory as Indonesia experiences an oxygen supply shortage amid a surge of coronavirus disease (COVID-19) cases, in Jakarta, Indonesia, July 6, 2021. REUTERS/Ajeng Dinar Ulfiana

A man wearing a protective mask sits near oxygen cylinders to be refilled at a factory as Indonesia experiences an oxygen supply shortage amid a surge of coronavirus disease (COVID-19) cases, in Jakarta, Indonesia, July 6, 2021. REUTERS/Ajeng Dinar Ulfiana

Employees wearing protective masks and scarves lift oxygen cylinders on a pick-up truck at a factory as Indonesia experiences an oxygen supply shortage amid a surge of coronavirus disease (COVID-19) cases, in Jakarta, Indonesia, July 6, 2021. REUTERS/Ajeng Dinar Ulfiana

An employee wearing a protective mask carries an oxygen cylinder at a factory, as Indonesia experiences an oxygen supply shortage amid a surge of coronavirus disease (COVID-19) cases, in Jakarta, Indonesia, July 6, 2021. REUTERS/Ajeng Dinar Ulfiana

Employees lift oxygen cylinders on a pick-up truck at a factory, as Indonesia experiences an oxygen supply shortage amid a surge of coronavirus disease (COVID-19) cases, in Jakarta, Indonesia, July 6, 2021. REUTERS/Ajeng Dinar Ulfiana

An employee wearing a protective mask on his chin refills an oxygen cylinder at a store amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, June 29, 2021. REUTERS/Ajeng Dinar Ulfiana

An employee adjusting a scarf on his face walks near oxygen cylinders at a factory amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, June 29, 2021. REUTERS/Ajeng Dinar Ulfiana TPX IMAGES OF THE DAY

An employee wearing protective mask lifts an oxygen cylinder to put it on the pick-up truck at a store amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, June 29, 2021. REUTERS/Ajeng Dinar Ulfiana