The testing ... or lack thereof factor
The timing of testing and a person’s “infection profile” may be factors in people incorrectly declaring themselves NOVIDs, said Anne Wyllie, PhD, a research scientist in epidemiology at the Yale School of Public Health in New Haven, Conn., and a codeveloper of a saliva PCR test for COVID.
“Infection profiles can vary between individuals,” she said. For some, the infection may start in the lower respiratory tract, others in the higher respiratory tract. “Depending on where the virus takes up residence, that can affect test results.”
Then there’s the following-instructions factor. “It’s very likely that due to tests not being done at the right time, with the right sample, or not repeated if there is ongoing evidence of symptoms, that there are individuals out there who believe they are NOVIDs but just missed catching their infection at the window of opportunity.” Dr. Wyllie said.
Susceptibility research
“The part we have proven is the genetic defect that would make you more susceptible to having severe disease,” Dr. Hsieh said.
Many published papers report that inherited and/or autoimmune deficiencies of type I interferon immunity, important for combating viral infections and modulating the immune response, can be a significant cause of life-threatening COVID pneumonia.
More recently, researchers, including Jean-Laurent Casanova, MD, PhD, professor at Rockefeller University, New York, and cofounder of the COVID Human Genome Effort, reported that deficiencies in a gene that plays a role in built-in immunity (the early response), and a gene involved in signaling within the immune cells, impair interferon production and may be the basis of severe COVID pneumonia.
NOVIDs’ habits run the gamut
As scientists continue their research, the NOVIDs have their own ideas about why they’ve dodged the pandemic bullet, and they have a variety of approaches to handling the pandemic now.
Ryan Alexander, the field rep who travels to casinos, is up to date on his vaccinations and has gotten all the recommended COVID shots. “I was wearing a mask when told to wear masks,” he said.
He still observes the social distance habit but lives life. “I’ve been to three or four concerts in the past couple of years.”
And does he worry his number will eventually be up? “Not at this point, no,” he said.
Joe Asher, 46, said he has not gotten COVID despite being in contact with about 100 people a day, on average. He works as a bartender at an Evansville, Ind., brewery.
“On a Friday night, we can get 500 people,” he said. “I feel like almost everyone at the brewery got it. There’s no way I wasn’t exposed to it all the time.”
However, he said, his coworkers who did get sick were very cautious about not infecting others, partly to help protect a coworker’s family with newborn twins, so that may have helped him stay uninfected, too.
Mr. Asher said he’s in good physical shape, and he’s worked around the public for a long time, so figures maybe that has strengthened his immune system. He’s always been careful about handwashing and said he’s perhaps a bit more conscious of germs than others might be.
Roselyn Mena, 68, a retired teacher in Richmond, Calif., about 16 miles northeast of San Francisco, said she’s managed to avoid the virus even though her husband, Jesus Mena, got infected, as did her two adult children. Now, she remains vigilant about wearing a mask. She tries not to eat inside at restaurants. “I’m super careful,” she said.
Besides her teacher training, Ms. Mena had training as a medical assistant and learned a lot about sanitizing methods. She gets an annual flu shot, washes her hands often, and uses hand sanitizer.
When she shops, she will ask salespeople not wearing masks to please mask. “Only one refused, and she got someone else [to wait on her].”
One reason she is always careful about hygiene, Ms. Mena said, is that “when I get a cold, I get really sick. It last and lasts.” Now, she does worry she might still get it, she said, with the prospect of getting long COVID driving that worry.
In the beginning of the pandemic, Rhonda Fleming, 68, of Los Angeles, lived in a “COVID bubble,” interacting with just a few close family members. As cases went down, she enlarged the bubble. Her two grown daughters got infected, but her granddaughter did not.
She has been vigilant about masking, she said, “and I do still mask in public places.” She has a mask wardrobe, including basic black as well as glittery masks for dressier occasions. “I always carry a mask because inevitably, a cougher surrounds me.”
Now, she will bypass restaurants if she doesn’t feel comfortable with the environment, choosing ones with good air flow. When she flew to Mexico recently, she masked on the plane.
At this point, she said she doesn’t worry about getting infected but remains careful.
Recently, two friends, who have been as diligent as she has about precautions, got infected, “and they don’t know how they got it.”