The message to vaccinate is not lost on Americans who are already calling their doctors and pharmacists to schedule a flu shot appointment before the start of the 2020-2021 season.
Experts say it's crucial to get vaccinated this season as it coincides with the ongoing coronavirus pandemic that continues to overwhelm hospitals in parts of the country and has taken the lives of more than 170,000 people in the U.S., according to Johns Hopkins data.
It's hard to know for sure how COVID-19 will mix with this year's flu season: Will mask wearing and social distancing contain flu transmission as it's meant to do with SARS-CoV-2? Or will both viruses simultaneously wreak havoc on the nation as some schools reopen for in-person learning?
"This fall, nothing can be more important than to try to increase the American public's decision to embrace the flu vaccine with confidence," Centers for Disease Control and Prevention Director Robert R. Redfield said Thursday speaking to the editor of JAMA. "This is a critical year for us to try to take flu as much off the table as we can."
Here are what doctors say you should know about the flu vaccine as we approach the start of this year's season.
When should I get my flu shot?
Dr. Susan Rehm, vice chair at the Cleveland Clinic’s Department of Infectious Diseases, said it’s important for patients to get the influenza vaccine as soon as possible.
CVS stores already have the flu vaccine in stock, and it became available Monday at Walgreens.
“I plan to get my flu shot as soon as the vaccines are available,” Rehm said. “My understanding is that they should be available in late August, early September nationwide.”
Other doctors, however, are recommending patients get their flu shot in late September or early October so protection can last throughout the flu season, which typically ends around March or April. The vaccine lasts about six months.
The CDC recommends people get a flu vaccine no later than the end of October – because it takes a few weeks for the vaccine to become fully protective – but encourages people to get vaccinated later rather than not at all.
Healthy people can get their flu vaccine as soon as it’s available, but experts recommend older people and those who are immunocompromised wait until mid-fall to get their shots so it lasts throughout the entire flu season.
People over the age of 65 should get Fluzone High-Dose vaccine because it contains four times the amount of antigen than the standard dose vaccine and provides better protection against flu viruses. However, doctors recommend getting the standard dose if the high dose is not available.
Who should get the vaccine?
The CDC recommends everyone six months and older get a flu vaccine every year. State officials announced Wednesday the flu vaccine is required this year for all Massachusetts school students enrolled in childcare, preschool, K-12 and post-secondary institutions.
“It is more important now than ever to get a flu vaccine because flu symptoms are very similar to those of COVID-19 and preventing the flu will save lives and preserve health care resources,” said Dr. Larry Madoff, medical director of the Bureau of Infectious Disease and Laboratory Sciences at the Massachusetts Department of Public Health.
Is the flu vaccine safe?
According to the CDC, hundreds of millions of Americans have safely received flu vaccine over the past 50 years. Common side effects for the flu vaccine include soreness at the injection spot, headache, fever, nausea and muscle aches.
Dr. William Schaffner, professor of infectious diseases at the Vanderbilt Medical Center in Nashville, Tennessee, emphasizes these symptoms are not the flu as the vaccine cannot and does not cause influenza.
“That’s just your body working on the vaccine and your immune response responding to the vaccine,” he said. “That’s a small price to pay to keep you out of the emergency room. Believe me.”
Some studies have found a small association of the flu vaccine with Guillain-Barré syndrome (GBS), but Dr. Len Horovitz, a pulmonary specialist at Lenox Hill Hospital in New York City, says there’s a one in a million chance of that happening.
Not only is the flu vaccine safe, but the pharmacies, doctor’s offices and hospitals administering it are also safe.
Horovitz and Schaffner said hospitals are taking all the necessary precautions to make sure patients are protected against COVID-19. Some hospitals send staff out to patients’ cars for inoculation while others allow patients to bypass the waiting room. All offices require masks, social distancing and are routinely disinfected.
“Call your health care provider to make sure you can get in and out quickly,” Schaffner advises. “It’s safe to get the flu vaccine and very important.”
Will it help prevent COVID?
While experts speculate any vaccine could hypothetically provide some protection against a virus, there’s no data that says the flu vaccine can protect against the coronavirus, SARS-CoV-2, which causes COVID-19.
“We don’t want to confuse people of that … because there’s simply no data,” Schaffner said. “Flu vaccine prevents flu; we’re working on a coronavirus vaccine. They’re separate.”
What can we expect from this year’s flu season and vaccine?
“Even before COVID, what we say about the flu is that it’s predictably unpredictable,” Rehm said. “There are some years that it’s a light year and some years that it’s horrible.”
Flu experts say they sometimes look at Australia’s flu season to get a sense of the strain and how it spreads as winter in the Southern Hemisphere started a few months ago.
According to the country’s Department of Health surveillance report, influenza has virtually disappeared reporting only 85 cases in the last two weeks of June – compared to more than 20,000 confirmed cases that time last year.
“Australia has had a modest season, but they were very good at implementing COVID containment measures and, of course, we’re not,” Schaffner said. “So, we’re anticipating that we’re going to have a flu season that’s substantial.”
The CDC says there are two types of vaccines available for the 2020-2021 season. One vaccine contains two flu A strains and one flu B strain, called a trivalent vaccine, while the other contains those three strains plus an additional flu B strain, called quadrivalent. Most trivalent vaccines are high-dose.
While some doctors may have both vaccines, others may only have one depending on the hospital's supply chain. Dr. Natasha Bhuyan, a practicing family physician in Phoenix, Arizona, says don't delay. Patients should get whatever vaccine is available to them.
"Vaccines are a selfless act, they’re protecting yourself and your friends through herd immunity," she said. "Any vaccine that you can get access to, you can get."
Horovitz said vaccine production and distribution has been on schedule this year, despite international focus on coronavirus vaccine development. He’s already received his shipment to the hospital and plans to begin administering the flu vaccine with four strains closer to the start of the season.
“I don’t think anything suffered because something else was being developed,” he said. “(The flu vaccine) has been pretty well established for the last 20 to 30 years.”
Producers are boosting supplies of the flu vaccine this year to meet what they expect will be higher demand. Vaccine maker Sanofi announced Monday it will produce 15% more vaccine than in a normal year.
Redfield told JAMA the CDC arranged for an additional 9.3 million doses of low-cost flu vaccine for uninsured adults this year, up from 500,000. The agency also is expanding plans to reach out to minority communities.
What about the nasal spray instead of the shot?
After the 2009 swine flu pandemic, several studies showed the nasal spray flu vaccine was less effective against H1N1 viruses leading the CDC and the Advisory Committee on Immunization Practices to recommend against it.
However, since the 2017-2018 season, ACIP and the CDC voted to resume the recommendation for its use after the manufacturer used new H1N1 vaccine viruses in production.
While these agencies and advisory committees don’t recommend one vaccine over the other, some pediatricians prefer the nasal spray arguing that it’s easier to administer to children than a shot.
Other doctors prefer the flu shot as some of the nasal spray side effects mimic respiratory symptoms and include wheezing, coughing, and a runny nose, according to the CDC. Horovitz said anything that presents cold symptoms should probably be avoided, especially among children who are known vectors of respiratory diseases.
“Giving them something that gives them cold (symptoms) for two or three days may expel more virus if they’re asymptomatic with COVID,” he said.
Health and patient safety coverage at USA TODAY is made possible in part by a grant from the Masimo Foundation for Ethics, Innovation and Competition in Healthcare. The Masimo Foundation does not provide editorial input.
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