September CONSULT

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In midst of COVID-19 pandemic, don’t disregard common flu

Published on Tuesday, September 1, 2020

By: Karen Bascom, kbascom@umc.edu

September has arrived, and that means flu season in Mississippi is just around the corner. This year has a twist: Another, more infectious virus that causes a more dangerous respiratory illness has already been spreading for months.

How might COVID-19 change the 2020-21 flu season?

Portrait of Joyce Olutade
Olutade

Dr. Joyce Olutade, director of Student Employee Health at the University of Mississippi Medical Center, said it might be more important than ever to get a flu shot this year.

“We are really pushing for everyone to receive their flu shot by the end of October,” Olutade said.

Influenza activity in Mississippi typically peaks between December and February, but some years the peak comes earlier, Olutade said. It takes the vaccine about two weeks to produce a robust immune response, so the sooner you can get a vaccine, the better.

“If you receive your flu vaccine too close to the time of virus exposure, it may not be as protective,” she said.

Anyone who can receive an influenza vaccine should get one, said Olutade, an assistant professor of family medicine at UMMC. People older than 65, children older than six months, pregnant women and people with pre-existing conditions like asthma, chronic obstructive pulmonary disease and diabetes should especially seek a vaccine this year.

There are multiple formulations, including those that provide more protection for people older than 65 or are safe for people with serious egg allergies.

While the flu vaccine will not prevent all cases of influenza, it does make the disease less severe for those who do contract the virus, Olutade said.

“When people receive the flu vaccine, they have a lower risk of being hospitalized or dying if they do get the flu,” she said.

The World Health Organization makes recommendations for the Northern Hemisphere’s annual version of the vaccine based on the strains that are most prevalent during the Southern Hemisphere’s flu season. Usually, doctors can look at flu activity there, which peaks between April and September, to predict the disease’s impact in the north.

This may not be the case for 2020.

“In the Southern Hemisphere, we saw a relatively low-activity flu season this year,” Olutade said. “That may be because of mask-wearing, hand-washing and social distancing efforts during the COVID-19 pandemic.”

However, she said every person who can should still get a flu shot this fall. First, personal hygiene practices are the only defensive measures individuals can take to prevent COVID-19 spread and infection.

“We have a vaccine for the flu, but we don’t have one for COVID-19,” Olutade said.

Second, COVID-19 is still widespread. SARS-CoV-2 has infected more than six million people and has caused about 200,000 deaths in the United States. Experts predict the pandemic will extend into 2021. On top of that, according to the Centers for Disease Control and Prevention influenza causes hundreds of thousands of hospitalizations and tens of thousands of deaths each year.

With both viruses spreading through a population, bed space in hospitals could be more limited than usual, Olutade said.

Portrait of Dr. Bhagyashri Navalkele
Navalkele

Dr. Bhagyashri Navalkele, medical director of infection prevention and control and assistant professor of medicine at UMMC, said there is another complicating difference between the Southern Hemisphere’s flu season and the one starting in the U.S.

“We have schools reopening, colleges and universities reopening, movie theaters reopening,” Navalkele said. “Not everyone is masking and following social distancing, and that letting down of your guard can have an impact on flu spreading.”

Navalkele said if most people get a flu shot and follow COVID-19 prevention recommendations, there is a chance for a milder flu season in Mississippi.

“If not, we might see a good number of cases in addition to COVID,” she said. “If you get flu and COVID together and you have risk factors and are older, then your risk for survival might be low.”


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