Does that mean those Americans vaccinated at least two weeks ago — meaning full immunity has kicked in — can throw their masks in the air and hug all in celebration?
You do have to mask up on public transportation or if required by laws or regulations — that would apply to hospitals, nursing homes and other health care settings, and even some local businesses and workplaces. Kids still have to mask up to go to school.
On CNN’s State of the Union Sunday, CDC Director Dr. Rochelle Walensky said that immunocompromised people should consult with their physicians before deciding to stop wearing a mask, but others, including those at higher risk for severe Covid-19, may want to do so, as well.
For the most part, studies emerging now suggest immunocompromised people or those on medications that interrupt their immune system — for example, people who have had organ transplants or are on chemotherapy — may not have as much protection from Covid-19 vaccines. At least one study suggests dialysis patients also may not be as protected, she said.
There are a number of conditions that can weaken immunity.
Some diseases, like HIV/AIDS, can completely devastate the body’s ability to fight infection. Organ transplant patients must take daily medications that suppress the immune system to keep it from rejecting the new organ. And chemotherapy works by killing cell growth to keep cancerous cells from multiplying, thus weakening the immune system.
“In addition to chemotherapy, certain types of immunotherapy, stem cell or bone marrow transplants, and other medicines can severely weaken the immune system,” said Laura Makaroff, the senior vice president for prevention and early detection at the American Cancer Society.
Many common diseases and conditions that affect millions of Americans can weaken the immune system, typically to lesser degrees. The body may respond listlessly to invaders, making it more vulnerable to infection and viruses such as Covid-19.
“I get sick really easily,” she said. “I cannot fight off anything to save my life. I start puking everywhere. It’s a terrifying thought.”
When it comes to cancer, both current patients and survivors should check with their doctor before removing masks and other protection, Makaroff said.
“For people who have a weakened immune system, either from cancer itself or treatment, you may be not fully protected even if you are fully vaccinated. It is important to talk with your health care provider about which precautions you still need to take,” she said.
Heart disease is the number one killer of men and women in the US, but unlike cancer, “the medications used to treat heart disease, for the most part, are not immunosuppressive, and should not pose any particular risks,” said American Heart Association President Dr. Mitchell Elkind.
“Patients with heart disease are at increased risk of adverse outcomes from Covid-19, but they have the same benefits from vaccines as those without heart disease,” Elkind said.
“We recommend that patients with heart disease who have been vaccinated, and are not immunocompromised for some other reason, follow CDC guidelines regarding wearing masks and social distancing,” he said.
Because pregnant women are at higher risk for severe Covid-19, Walensky said that the CDC is encouraging them to get vaccinated, and the decision to go unmasked would be an individual one.
Millions of Americans live with common autoimmune conditions such as “psoriasis, rheumatoid arthritis, scleroderma, inflammatory bowel disease, Crohn’s disease, ulcerative colitis and lupus,” said Dr. Cedric “Jamie” Rutland, a pulmonary and critical care physician.
In autoimmune disorders, the immune system goes awry, mistakenly ordering its army of warriors to attack the person’s own body.
Medications often used to treat autoimmune disorders are built to suppress that overzealous immune response — but it’s not targeted. Instead, the drugs weaken the entire immune system, leaving the body vulnerable to upper respiratory and urinary tract infections, pneumonia, skin infections and, of course, Covid-19.
A few studies have also found that by dampening immune response, people who are on medications for autoimmune diseases may not “have as strong of a response to the Covid-19 vaccine,” said Rutland, the medical director of the Rutland Medical Group in Newport Beach, California.
While vaccination appears to be effective, Rutland said he plays it safe with his patients: “I take them off of those (autoimmune) medications before they get vaccinated, so they can have the appropriate immune response,” he said.
In the end, how do you decide if you fit into the category of “weakened immune system”? How can you know if you should think twice about joining the maskless masses?
“What we would recommend is certainly for people who have immune compromising diseases or on those medications to consult their physicians,” Walensky said.
“Really, again, not everybody has to rip off their mask because our guidance changed on Thursday,” she said. “So, yes, if you are concerned, please do consult your physician before you take off your mask.”
CNN’s Ryan Prior and Virginia Langmaid contributed to this report.