Shelly Kendeffy felt good the moment she got her two doses of the Moderna COVID-19 vaccine. However, he had a swollen arm and muscle aches by the evening, almost like she had the flu.
Kendeffy, a 44-year-old medical technician from State College, Pennsylvania, said, “I was freezing, but I was sweating — like sweating, but cold.”
Table of Contents
- The accounts from the eight men were wildly disparate
- findings of discrepancies within her colleagues are being repeated around the world
- This sex disparity is entirely compatible with previous vaccination studies
- the news for women was not all negative
- no denying that genetics plays a significant part
- flu shot is less effective than in men who have less Testosterone
She returned to work the next day and questioned her friends, eight males and seven females, about their vaccination impressions. Six of the women were experiencing muscle aches, chills, and exhaustion. The one person who didn’t have flu like symptoms was awake all night throwing up.
The accounts from the eight men were wildly disparate
The accounts from the eight men were wildly disparate. Mild arm discomfort, a fever, and body aches afflicted one of the participants. Slight weakness and achiness were identified by two of the participants. A pain was experienced by one of the participants. Four of the participants had no signs or effects at all.
Kendeffy clarified, “I deal with some really difficult ladies.” However, “clearly, the seriousness of the adverse effects was felt most intensely by us ladies.” Within 24 hours, she felt much happier, and she was grateful for the vaccination she had. “I would also not change a single thing,” she said, “because it’s so much easier than the alternatives.” “However, I had no idea what to expect.”
findings of discrepancies within her colleagues are being repeated around the world
Kendeffy’s findings of discrepancies within her colleagues are being repeated around the world. Researchers from the Centers for Disease Control and Prevention looked at protection evidence from the first 13.7 million COVID-19 vaccine doses provided to Americans in a report released last month. 79.1% of the adverse effects recorded by the department came from women, despite the fact that just 61.2 percent of the vaccinations were given to women.
Women also experienced almost all of the unusual anaphylactic responses to COVID-19 vaccinations. According to the CDC, 19 of the 19 people who had allergic reactions to the Moderna vaccine were female, and 44 of the 47 people who had severe allergies to the Pfizer vaccine were female.
This sex disparity is entirely compatible with previous vaccination studies
“I am not disappointed in the least,” said Sabra Klein, a toxicologist and immunologist at Johns Hopkins Bloomberg School of Public Health. “This sex disparity is entirely compatible with previous vaccination studies.”
Scientists from the CDC and other agencies discovered in a 2013 survey that five times as many females as males aged between 20 and 59 registered allergic reactions since consuming the 2009 influenza flu vaccine, despite the reality that more males than females administered the vaccine. According to another report, females accounted for about 80 percent of all patient anaphylactic responses to vaccinations between 1990 and 2016.
Women “had further responses to a number of vaccinations,” according to Julianne Gee, a physician with the Centers for Disease Control and Prevention’s Immunization Protection Office. This covers adult influenza vaccinations as well as certain vaccines offered to infants, such as hepatitis B and the measles, mumps, and rubella (MMR) vaccines.
the news for women was not all negative
However, the news for women was not all negative. The majority of adverse effects are minor and brief. And these physical responses are an indication that a vaccination is successful, according to Klein, since “you are building a very strong immune response, and you will certainly be safe as a result.”
So why do these gender inequalities exist? It’s likely that motivational variables play a part in the solution. Even where their signs are the same, women might be more likely than men to experience side effects, according to Rosemary Morgan, an international health expert at the Johns Hopkins Bloomberg School of Public Health. There is no evidence to back up this argument, but men may be less likely than females to go to the doctor while they are ill, so they might be less likely to mention side effects, according to her.
no denying that genetics plays a significant part
And then, there’s no denying that genetics plays a significant part. Eleanor Fish, an immunologist at the University of Toronto, clarified, “The female immune response is distinct in several respects from the male immune response.”
In comparison to their male peers, women and girls develop more infection-fighting antibodies in reaction to vaccinations for measles, MMR, yellow fever, rabies, and hepatitis A and B, according to research. They also provoke stronger reactions from immune warriors such as T cells, according to Gee. Younger adults have the most important variations, which “suggests a biological influence, likely correlated with reproductive hormones,” she added.
Estrogen, progesterone, and testosterone, among other sex hormones, may attach to the surface of immune cells and affect their function. When immune cells are subjected to estrogen, they generate more antibodies in reaction to vaccines, such as the flu vaccine.
flu shot is less effective than in men who have less Testosterone
“It’s sort of brilliantly immunosuppressive,” Klein said of testosterone. In men who have a lot more testosterone, the flu shot is less effective than in men who have less of the male hormone. Testosterone stimulates the development of defensive chemicals called cytokines throughout the body, among other items.
Immunity can also be affected by developmental variations between men and women. The X chromosome, of which females have two versions and men only copy, contains several immune-related genes. Previously, immunologists assumed that only one X chromosome in women was involved, while the other was inactive. However, recent evidence reveals that 15% of genes aren’t inactivated in men and are displayed more intensely in women.
This strong immune responses may clarify why women are affected by 80 percent of all autoimmune diseases. “Women have greater tolerance, whether it’s to themselves, to a vaccine antigen, or to a virus,” Klein said.
It’s also possible that the magnitude of a vaccine dose is important. According to studies, women consume and metabolize medications differently than males, necessitating lower doses to have the same impact. However, before the 1990s, women were mostly exempt from medication and vaccine clinical studies. “Historically, medication dosages have been dependent on clinical studies with male subjects,” Morgan said.
Women are included in clinical trials today. However, side effects were not properly isolated and evaluated by sex in the trials for the current COVID vaccinations, according to Klein. They still didn’t look at whether smaller doses might be just as beneficial for women but also cause fewer side effects.
Health care professionals should speak to women about vaccination side effects before they do, according to Klein, so that they are not fearful of them. “I believe that educating women about the possibility of further negative responses is beneficial,” she said. “That’s natural, and it’s most likely an indication that their immune system is functioning properly.”