Mass disinfections to combat coronavirus pose another health hazard
SURABAYA, Indonesia/SINGAPORE (Reuters) – A drone dispersed clouds of disinfectant in the sky above Indonesia’s second-largest city Surabaya on Tuesday, a response to the coronavirus pandemic which is catching on around the world despite warnings from health experts.
Mass disinfections, often by workers in protective gear resembling characters from the comedy film Ghostbusters, have become a common sight — from Turkey’s Grand Bazaar to bridges in Mexico and migrant workers in India.
But the visually-impressive measures taken to contain the fast-spreading virus which has killed over 37,000 people globally, have been criticized by disease specialists as a health hazard as well as a waste of time and resources.
“It’s a ridiculous image seen in many countries,” said Dale Fisher, an infectious diseases expert in Singapore who chairs the Global Outbreak Alert and Response Network coordinated by the World Health Organization.
“I don’t believe it adds anything to the response and could be toxic on people. The virus does not survive for long in the environment and people do not generally touch the ground.”
A spokesman for Surabaya’s major said the use of drones for disinfection was necessary in areas with confirmed cases because the virus “can be anywhere”.
Febriadhitya Prajatara compared the benzalkonium chloride disinfectant, which can cause skin irritations in high concentrations, to “soap” and said it would help “weaken the virus so it won’t enter our body”.
Coronavirus is a contagious respiratory disease that spreads through droplets from the nose or mouth via coughing or sneezing.
People can also become infected by contacting something contaminated before touching their own nose, mouth or eyes.
Paul Tambyah of the Asia Pacific Society of Clinical Microbiology and Infection said handwashing and targeted cleaning of commonly-touched surfaces like elevator buttons offered better protection than mass disinfecting.
“It (spraying) is probably a cheap and visible way of doing it, but careful attention to personal and environmental hygiene is probably more effective,” said Tambyah.
Indian health workers caused outrage on Monday when they used hose pipes to douse migrant workers in the northern state of Utter Pradesh, amid fears the movement of people from cities to the countryside risked spreading the virus.
In Malaysia, under nationwide lockdown due to the virus, authorities have gone on a disinfection spree in areas with high case numbers to reduce the risk of further transmission.
But images of plumes of disinfectant spray fired from trucks into the air or from spray guns on to roads have riled health experts.
“Disinfecting roads is clearly not going to be impactful,” said Christopher Lee, a former deputy director general in Malaysia’s health ministry and an infectious disease specialist. “Waste of resources and man hours.”
Malaysia’s director-general of health Noor Hisham Abdullah said on Tuesday the government would be issuing guidelines to local authorities to make sure disinfection operations are carried out properly.
Back in Indonesia, telephone box-shaped disinfection chambers are being set up across the capital Jakarta, offering passers-by a quick blast to rid their clothes and skin of potential germs.
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