A postman collects mail from a Royal Mail postbox with a decorative topper made by a group known as The Yarnbombers, to raise money for people affected by the spread of the coronavirus disease (COVID-19), in St Albans, Britain, August 5, 2020. REUTERS/Andrew Couldridge

A red-tailed black bumblebee collects nectar from lavender blossoms at Hitchin Lavender farm in Ickleford, Britain, August 4, 2020. REUTERS/Peter Cziborra

An official collects a testing kit through a car window at a mobile drive through coronavirus disease (COVID-19) testing centre, in Richmond, London, Britain August 4, 2020. REUTERS/Toby Melville

Officials deliver and collect testing kits through car windows at a mobile drive through coronavirus disease (COVID-19) testing centre, in Richmond, London, Britain August 4, 2020. REUTERS/Toby Melville

A scavenger's child sits near a bag of collected recyclable waste at the Dandora dumpsite, amid the coronavirus disease (COVID-19) outbreak in Eastlands Nairobi, Kenya July 29, 2020. Picture taken July 29, 2020. REUTERS/Thomas Mukoya

Julia Wanja, a hair stylist, collects women's hair extensions to be recycled, at the Dandora dumpsite amid the coronavirus disease (COVID-19) outbreak in Eastlands Nairobi, Kenya July 29, 2020. Picture taken July 29, 2020. REUTERS/Thomas Mukoya

Brandon Parrum, general manager of CarMax's Des Moines store, shows off one of the many vehicles that customers can arrange to buy online and collect at the store using "contactless" curbside pickup, a service the U.S. used car retailer launched during the coronavirus disease (COVID-19) pandemic, in De Moines, Iowa, U.S. July 29, 2020. REUTERS/Nick Carey

Brandon Parrum, general manager of CarMax's Des Moines store, walks past some of the many vehicles that customers can arrange to buy online and collect at the store using "contactless" curbside pickup, a service the U.S. used car retailer launched during the coronavirus disease (COVID-19) pandemic, in De Moines, Iowa, U.S. July 29, 2020. REUTERS/Nick Carey

Brandon Parrum, general manager of CarMax's Des Moines store, shows off one of the many vehicles that customers can arrange to buy online and collect at the store using "contactless" curbside pickup, a service the U.S. used car retailer launched during the coronavirus disease (COVID-19) pandemic, in De Moines, Iowa, U.S. July 29, 2020. REUTERS/Nick Carey

A Kashmiri man, who gave his name as Sahil and claimed he had been detained by police thrice for stone pelting, collects weed from Anchar Lake in Srinagar July 28, 2020. Picture taken July 28, 2020. REUTERS/Danish Ismail

Members of women's collectives spray the shields of police officers with paint during a protest after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Police officers guard a protest of members of women's collectives after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Police officers guard a protest of members of women's collectives after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Police officers guard a protest of members of women's collectives after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Members of women's collectives protest after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Spectators take pictures as members of women's collectives run (not pictured) during a protest after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Police officers guard a protest of members of women's collectives after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Police officers guard a protest of members of women's collectives after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Police officers guard a protest of members of women's collectives after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Members of women's collectives run during a protest after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Members of women's collectives protest after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Members of women's collectives protest after Mexico's Supreme Court judges voted down an injunction that could have decriminalised abortions in the conservative state of Veracruz, in Mexico City, Mexico July 31, 2020. REUTERS/Carlos Jasso

Perryn Flint, 60, stands in line to collect groceries distributed by the Wesley Community Center to residents affected by the economic fallout from the coronavirus disease (COVID-19) outbreak in Houston, Texas, U.S., July 31, 2020. REUTERS/Adrees Latif

Residents fill and collect sand bags before the expected arrival of Hurricane Isaias in Doral, Florida, U.S. July 31, 2020. REUTERS/Liza Feria

Residents fill and collect sand bags before the expected arrival of Hurricane Isaias in Doral, Florida, U.S. July 31, 2020. REUTERS/Liza Feria

Residents fill and collect sand bags before the expected arrival of Hurricane Isaias in Doral, Florida, U.S. July 31, 2020. REUTERS/Liza Feria

Residents fill and collect sand bags before the expected arrival of Hurricane Isaias in Doral, Florida, U.S. July 31, 2020. REUTERS/Liza Feria

Residents fill and collect sand bags before the expected arrival of Hurricane Isaias in Doral, Florida, U.S. July 31, 2020. REUTERS/Liza Feria

An NHS employee collects a sample at a testing centre near the Crown and Anchor pub following a spike in cases of the coronavirus disease (COVID-19) to visitors of the pub in Stone, Britain, July 30, 2020. REUTERS/Carl Recine

An NHS employee collects a sample at a testing centre near the Crown and Anchor pub following a spike in cases of the coronavirus disease (COVID-19) to visitors of the pub in Stone, Britain, July 30, 2020. REUTERS/Carl Recine

A medical specialist wearing a protective suit pours droplets of blood, collected from people who have returned from Da Nang, onto a test kit for coronavirus disease (COVID-19) at a rapid testing center outside Hanoi, Vietnam July 30, 2020. REUTERS/Kham

A medical specialist wearing a protective suit pours droplets of blood, collected from people who have returned from Da Nang, onto a test kit for coronavirus disease (COVID-19) at a rapid testing center outside Hanoi, Vietnam July 30, 2020. REUTERS/Kham

Medical specialists wearing protective suits collect blood specimen from a person who has returned after travelling to Da Nang, at a rapid testing center for coronavirus disease (COVID-19) outside Hanoi, Vietnam July 30, 2020. REUTERS/Kham

A medical specialist wearing a protective suit collects blood specimen from a boy who has returned after travelling to Da Nang, at a rapid testing center for coronavirus disease (COVID-19) outside Hanoi, Vietnam July 30, 2020. REUTERS/Kham

A medical specialist wearing a protective suit collects blood specimen from a person who has returned after travelling to Da Nang, at a rapid testing center for coronavirus disease (COVID-19) outside Hanoi, Vietnam July 30, 2020. REUTERS/Kham

A medical specialist wearing a protective suit collects blood specimen from a man who has returned after travelling to Da Nang, at a rapid testing center for coronavirus disease (COVID-19) outside Hanoi, Vietnam July 30, 2020. REUTERS/Kham

Medical specialists wearing protective suits collect blood sample from a woman who has returned after travelling to Da Nang, at a rapid testing center for coronavirus disease (COVID-19) outside Hanoi, Vietnam July 30, 2020. REUTERS/Kham

A medical health worker in a Personal Protective Equipment (PPE) collects a sample from a man using a swab, during a voluntary coronavirus disease (COVID-19) test in Limassol, Cyprus, July 29, 2020. REUTERS/Yiannis Kourtoglou

A medical health worker in a Personal Protective Equipment (PPE) collects a sample from a woman using a swab, during a voluntary coronavirus disease (COVID-19) test in Limassol, Cyprus, July 29, 2020. REUTERS/Yiannis Kourtoglou

A medical health worker in a Personal Protective Equipment (PPE) collects a sample from a woman using a swab, during a voluntary coronavirus disease (COVID-19) test in Limassol, Cyprus, July 29, 2020. REUTERS/Yiannis Kourtoglou

A medical health worker in a Personal Protective Equipment (PPE) collects a sample from a man using a swab, during a voluntary coronavirus disease (COVID-19) test in Limassol, Cyprus, July 29, 2020. REUTERS/Yiannis Kourtoglou

Health officials take a swab sample for the coronavirus disease (COVID-19) from traffic policemen while siting inside a mobile swab collection vehicle at Singha Durbar office complex, that houses the Prime Minister's office and other ministries, in Kathmandu, Nepal July 29, 2020. REUTERS/Navesh Chitrakar TPX IMAGES OF THE DAY

A health official takes a swab sample for the coronavirus disease (COVID-19) from a man while siting inside a mobile swab collection vehicle at Singha Durbar office complex, that houses the Prime Minister's office and other ministries, in Kathmandu, Nepal July 29, 2020. REUTERS/Navesh Chitrakar

A health official takes a swab sample for the coronavirus disease (COVID-19) from a traffic policeman while siting inside a mobile swab collection vehicle at Singha Durbar office complex, that houses the Prime Minister's office and other ministries, in Kathmandu, Nepal July 29, 2020. REUTERS/Navesh Chitrakar

Health officials sit inside a mobile swab collection vehicle as they wait to test civil servants for the coronavirus disease (COVID-19) at Singha Durbar office complex, that houses the Prime Minister's office and other ministries, in Kathmandu, Nepal July 29, 2020. REUTERS/Navesh Chitrakar

A health official takes a swab sample for the coronavirus disease (COVID-19) from a traffic policeman while siting inside a mobile swab collection vehicle at Singha Durbar office complex, that houses the Prime Minister's office and other ministries, in Kathmandu, Nepal July 29, 2020. REUTERS/Navesh Chitrakar

A health worker in personal protective equipment (PPE) collects a swab sample of a child at a children's home during a check up campaign for the coronavirus disease (COVID-19) in Mumbai, India July 28, 2020. REUTERS/Francis Mascarenhas

A medical health worker collects a sample from a woman using a swab, at a local health centre to conduct tests for the coronavirus disease (COVID-19), amidst the spread of the disease, in New Delhi, India July 28, 2020. REUTERS/Adnan Abidi

A medical health worker in personal protective equipment (PPE) collects a sample from a woman using a swab, at a local health centre to conduct tests for the coronavirus disease (COVID-19), amidst the spread of the disease, in New Delhi, India July 28, 2020. REUTERS/Adnan Abidi TPX IMAGES OF THE DAY

An advertisment displaying the rates of charity and collective sacrifice at the Alamgir Welfare Trust online sacrifice booking office, ahead of the Muslim festival of sacrifice Eid al-Adha, as the coronavirus disease (COVID-19) pandemic continues, in Karachi, Pakistan July 25, 2020. Picture taken July 25, 2020. REUTERS/Akhtar Soomro

Researchers of the Rio de Janeiro State University (UERJ) walk in an alley after installing the equipment developed by Heitor Evangelista to collect sprays containing the new coronavirus in their droplets from the open-air sewage of the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes TPX IMAGES OF THE DAY

Children are seen near the equipment developed by Heitor Evangelista and installed by him and his research group of the Rio de Janeiro State University (UERJ) to try to collect sprays containing the new coronavirus in their droplets from the air at the main entrance to the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes

Children are seen next to the equipment developed by Heitor Evangelista and installed by him and his research group of the Rio de Janeiro State University (UERJ) to try to collect sprays containing the new coronavirus in their droplets from the air at the main entrance of the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes

Heitor Evangelista and other researcher of the Rio de Janeiro State University (UERJ) prepare the equipment developed by him to try to collect sprays containing the new coronavirus in their droplets from the open-air sewage of the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes

Residents walk near the equipment developed by Heitor Evangelista and installed by him and his research group of the Rio de Janeiro State University (UERJ) to try to collect sprays containing the new coronavirus in their droplets from the open-air sewage of the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes

A resident walks next to the equipment developed by Heitor Evangelista and installed by him and his research group of the Rio de Janeiro State University (UERJ) to try to collect sprays containing the new coronavirus in their droplets from the air at the main entrance of the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes

Heitor Evangelista and other researcher of the Rio de Janeiro State University (UERJ) prepare the equipment developed by him to try to collect sprays containing the new coronavirus in their droplets from the open-air sewage of the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes

A researcher of the Rio de Janeiro State University (UERJ) prepares the equipment developed by Heitor Evangelista to try to collect sprays containing the new coronavirus in their droplets from the open-air sewage of the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes

A researcher of the Rio de Janeiro State University (UERJ) prepares the equipment developed by Heitor Evangelista to try to collect sprays containing the new coronavirus in their droplets from the open-air sewage of the Santa Marta slum, as they work with the local volunteer sanitization team lead by Thiago Firmino during the outbreak of the coronavirus disease (COVID-19), in Rio de Janeiro, Brazil July 27, 2020. REUTERS/Ricardo Moraes

A medical health worker in a Personal Protective Equipment (PPE) collects a sample from a person using a swab, at a school which was turned into a centre to conduct tests for the coronavirus disease (COVID-19), amidst the spread of the disease, in New Delhi, India, July 27, 2020. REUTERS/Adnan Abidi