Plumber David Murphy works in an East Wareham, Massachusetts home in 2014. Doctors and researchers say that during the pandemic it’s important for home repair people and installers to work in well-ventilated areas and to wear masks at all times. Homeowners and workers should maintain social distance throughout the visit. STEPHAN SAVOIA/ASSOCIATED PRESS
The first thing to keep in mind is protection and contraction is a two-way street. You want to protect yourself from getting the virus, but in case you are asymptomatic or have extremely mild symptoms, you also want to protect the repair or delivery person from you. That starts with screening even before someone arrives at your home, said Dr. Steve Lawrence, an infectious disease researcher at Washington University in St. Louis. While rudimentary, that can be accomplished not with a testing kit, but with a set of questions.
“Call ahead or look online to find out what kind of safety procedures and protocols they have in place to protect workers and customers,” Dr. Lawrence said. “That should include masks, cleaning supplies, sanitizer that they bring with them.”
Once they arrive, it’s important to ask a series of questions before letting them in, but do so respectfully, at a safe distance and while wearing a mask.
“‘Have you been feeling okay? Have you been around anyone with COVID-19? Have you been tested?” Lawrence said. “And make sure they don’t have a cough or fever. But at the same time you’re asking about them, don’t let anyone come in your house if you’re not feeling well.”
And don’t be surprised if the company you’re booking a service with asks you a similar set of questions.
Doctors and researchers say it’s important to clean surfaces any repair people touch immediately after they leave.SANDY HUFFAKER/THE NEW YORK TIMES
While wearing masks has been made into a political and ideological fight, the science around wearing them remains the same, researchers say. Masks work to prevent you from infecting someone, and if both you and the worker are wearing them, the chances of transmission fall dramatically. Just as important is washing or sanitizing hands before, during and after the delivery or service. For that reason, keep a bottle of sanitizer by the entry to your home and ask the service person to use it before entering. The risk of transmission is low if you get closer than six feet to someone as they are coming into your home, but maintaining at least six feet of distance while they are working is key.
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“It’s all about time and contact,” said Phil Santangelo, a professor of biomedical engineering at Georgia Tech. “Don’t stand there if they are working. The mask is not a panacea. If it’s in a bathroom, run an exhaust fan while they are working and maybe for a while after they leave. Open a window in the room where they are working. If there’s no PPE, I wouldn’t be anywhere near them.”
If a person has to work in your home for several hours on a repair, it’s still possible to be safe, said Maria Sundaram, a post-doctoral fellow in infectious disease at Emory University, even if that person works up a sweat while doing their job. Since the virus is contracted mainly through respiratory transmission; respiratory droplets are of more concern than sweat, which is why masks at all times are important, she said.
“The virus is replicating in little sacs in your lungs called alveoli,” Sundaram said. “They (alveoli) look like an upside-down broccoli, and the ends are shaped like little bulbs. They are a nice ground for viruses to grow when you are sick. The liquid in sweat is coming from a completely different place. It’s not impossible to have transmission that way, but it’s pretty unlikely.”
Shoes aren’t considered at high risk of transmission, so there’s no need to ask a person to remove them unless that is the practice in your home, researchers say. Gloves are of little help because most people don’t know how to wear them and remove them properly, Sundaram said. “A lot of people find it challenging not to touch their face. And gloves are not antimicrobial surfaces, so coughing into a glove is like coughing into your hand.”
If someone in your home is at risk, or immuno-compromised, keep them in an area of the home as far away from where the work is taking place as possible. Also, if, for example, you or a loved one is elderly and concerned about transmission, getting someone who is healthy and who has been observing stay-at-home protocols to greet the repair person and showing them where to work is an option, Sundaram said.
Cleaning every surface with soap and water, or a household cleaner such as Lysol or with an alcohol base is a must once the work is done, all of the researchers say.
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Active virus left on a surface will degrade on its own in a few minutes to a few days, but you shouldn't wait for that, they say. And all of them say now is not the time for elective home repairs, such as hiring painters for the interior of your home or anything that requires someone to be in your space for extended periods of time.
“There’s not a single thing that eliminates risk, but when you add layers of intervention, it greatly reduces risk,” Dr. Lawrence said.