Twindemic (twin + -demic)

The 2019–20 coronavirus pandemic< was feared to exist alongside a flu epidemic. The word "twindemic" (twin +epidemic/pandemic) was coined.

   
“H1N1 & Covid-19=twindemic” was posted on Twitter by DangerDangerDanger on July 2, 2020. “Fearing a ‘Twindemic,’ Health Experts Push Urgently for Flu Shots” by Jan Hoffman was printed in the New York (NY) Times on August 16, 2020.
 
The term quickly went viral. “Twindemic” had been infrequently used earlier to describe an epidemic of twins.
 
   
Wikipedia: 2019-20 coronavirus outbreak
The 2019–20 coronavirus pandemic is an ongoing global pandemic of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The outbreak was first identified in Wuhan, Hubei, China, in December 2019, and was recognised as a pandemic by the World Health Organization (WHO) on 11 March 2020.
         
Twitter
DangerDangerDanger
@MaydNMerica
Replying to @Alt_NASA
H1N1 & Covid-19=twindemic
7:54 PM · Jul 2, 2020·Twitter for iPhone
   
New York (NY) Times
Fearing a ‘Twindemic,’ Health Experts Push Urgently for Flu Shots
There’s no vaccine for Covid-19, but there’s one for influenza. With the season’s first doses now shipping, officials are struggling over how to get people to take it.

By Jan Hoffman
Published Aug. 16, 2020
Updated Sept. 2, 2020
As public health officials look to fall and winter, the specter of a new surge of Covid-19 gives them chills. But there is a scenario they dread even more: a severe flu season, resulting in a “twindemic.”
(...)
The concern about a twindemic is so great that officials around the world are pushing the flu shot even before it becomes available in clinics and doctors’ offices.
     
Eat Healthy & Live Healthy
Fearing a ‘Twindemic,’ Health Experts Push Urgently for Flu Shots
Healthy by Healthy August 16, 2020 in Health
“Access is a problem for all adult vaccines,” said L. J. Tan, chief strategy officer for the Immunization Action Coalition, a nonprofit group that works to increase vaccination rates, who was an early promoter of the term twindemic. “Adults may think, If I can get the flu shot easily, I might consider it.”
 
Twitter
Tapan Patel
@Tapan_Patel
#POV: Coming this fall. Learned a new word of the day #Twindemic - #flu and #coronavirus in parallel existence.
3:39 PM · Aug 16, 2020·Twitter Web App
   
Twitter
Cassandra Renee
@CRTebeck
So the word “twindemic” is circulating, referring to the future overlap of Covid and regular flu.
As a twin, I thought this was twin-related Upside-down face
3:38 PM · Aug 19, 2020·Twitter for iPhone
 
NBC News
CDC urges all Americans to get flu shots amid fears of ‘twindemic’
Experts are warning about the double impact of flu season and the coronavirus pandemic overwhelming hospitals this fall.

Aug. 21, 2020
   
Twitter
teresa twisselman
@tetwiss
Heard a new word today:  “twindemic”. Covid during flu season. Time to get a flu shot.
12:19 PM · Aug 26, 2020·Twitter for iPhone
 
Twitter
Toby Rogers PhD, MPP
@uTobian
“Twindemic” is some bullsh*t thought up in a conference room at Hill+Knowlton Strategies. It’s not epidemiology. It’s not science. It’s a marketing slogan to sell more product.
8:07 PM · Aug 27, 2020·Twitter Web App
 
YouTube
Doctors warn of ‘twindemic’ as flu season approaches during COVID-19 pandemic
Sep 2, 2020
WRTV Indianapolis
Health officials are sharing warnings about the upcoming flu season in hopes of avoiding what they’re calling a “twindemic” during the COVID-19 pandemic.