Dr. Danice Hertz remembers vividly the day she got a COVID-19 vaccine.
Hertz, a retired gastroenterologist, received Pfizer’s shot on Dec. 23, 2020, less than two weeks after U.S. regulators granted it emergency use authorization.
Thirty minutes went by before an adverse reaction started.

By Zachary Stieber, Jan Jekielek and Meiling Lee
Epoch Times, February 19, 2022
“My face started burning and tingling and my eyes got blurry,” Hertz told The Epoch Times. She also felt faint.
Her husband called paramedics, who came and found Hertz’s blood pressure was sky-high. They recommended she call a doctor.
Hertz became so sick she feared she would die. She experienced symptoms including severe facial pain, chest constriction, tremors, twitching limbs, and tinnitus.
“I felt like someone was pouring acid on me,” Hertz, of Los Angeles, California, said.
Hertz survived but still suffers. She has been to numerous specialists. Multiple experts found indications the vaccine triggered the reaction, according to medical records reviewed by The Epoch Times.
Hertz is one of millions of Americans who chose to get one of the COVID-19 vaccines soon after the government cleared them.
Since then, hundreds of millions of doses have been administered. Many recipients have been fine, if less protected than they were initially promised. But a growing number have endured severe reactions and have struggled to obtain treatments for their ailments.
Brianne Dressen suffered so badly after getting AstraZeneca’s COVID-19 vaccine on Nov. 4, 2020, that she would often sit in silence in a room in complete darkness.
“My little girl, she sings all the time. And I couldn’t have her around me at all because sound was so unbearable. And my little boy, my skin was sensitive, so anything that touched my skin was painful, so my little boy, he’d come and try to comfort me and hold my hand, and even that was painful. My teeth were too sensitive; I couldn’t brush my teeth. So it’s like all of my sensory facets just overloaded,” Dressen, a preschool teacher who lives in Saratoga Springs, Utah, told The Epoch Times.
“It was the worst experience of my life.”
Pain
Reactions to COVID-19 vaccines often happen soon after administration—one of the reasons health care providers are told to monitor patients for at least 15 minutes after a dose is given.
For most recipients, problems are small, like a headache, and soon go away. For others, the pain has still not subsided.
“Right now, all I do is work. That’s all I can do,” Erin Sullivan, a speech pathologist in Connecticut who received Moderna’s jab on Jan. 6, 2021, told The Epoch Times. “Everyone around me, like family, are doing everything else. I’m not cooking, I’m not cleaning, I’m not doing laundry. I’m not taking the kids anywhere. I basically work and then I go to bed.”
Sullivan, who later got a second dose of Pfizer’s jab on the recommendation of an immunologist, has suffered from tingling in her limbs, severe fatigue, and other symptoms for over a year.
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