Covid-19 Vaccine Side Effects Showdown: Pfizer vs. Moderna

Mar 12, 2021

As a global community reporting platform focused on consumer wellbeing, we receive a wide range of reports. Since the launch of the Covid-19 vaccines we have accumulated reports relaying peoples’ experiences after receiving doses of the currently approved vaccines e.g. Moderna, Pfizer, Jansen, Johnson & Johnson, and Oxford-AstraZeneca. We took some time to analyze, and categorize the results so far, so we can share back to our community and others who may find this helpful.

We hope that by sharing this information, people will feel better informed on the range of possible outcomes as they move ahead with their vaccinations, and for those who have been vaccinated already, we hope the results offer some comfort in knowing that you are not alone in experiencing certain side effects.

A percentage breakdown of reported side effects:

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Percentage breakdown of Covid-19 Side Effects. Source: Safelyhq.com

To categorize reports we used the following approach:

  • None: User stated they had ‘no side effects’
  • Mild: Typically just soreness and side effects described as ‘mild’ by the users.
  • Strong: Unusual or notable description, which includes trips to ER, or intense reactions.
  • Medium: Everything that falls in between mild and strong.

Important: The focus of this story is the comparison between Moderna and Pfizer, please see our data notes at the bottom about reporting bias & data skew, we are not concluding that only 13% of vaccine recipients will escape side effects.

Side Effect Breakdown, Pfizer vs. Moderna

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Covid-19 Side Effect Comparison — Pfizer vs Moderna. Source: Safelyhq.com

We more commonly saw reports with no side effects from Pfizer, and where Pfizer side effects were reported they were more commonly reported as mild vs Moderna.

What are the most commonly reported side effects?

Of people who experienced side effects, the most common mentions are shown below. We excluded soreness as this was common to the majority of reports.

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The Most Commonly Reported Covid-19 Vaccine Side Effects. Source: Safelyhq.com

What is the side effect breakdown: Moderna vs Pfizer?

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Top 10 Side Effect Mentions Comparing Pfizer & Moderna Source: Safelyhq.com

This shows the top 10 mentions by vaccine (again excluding soreness). Moderna has more mentions for each side effect. Moderna has a lot more side effect mentions per report — in total 60% higher than Pfizer.

What are some sample reports?

A sample ‘No Side Effects’ report:

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Sample report ‘No side effects’. Source: Safelyhq.com — Link

A sample ‘Mild’ report:

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Sample ‘Mild’ report. Source: Safelyhq.com — Link

A sample ‘Medium’ Report:

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Sample ‘Medium’ report. Source: Safelyhq.com — Link

A sample ‘Strong Side Effects’ report:

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Sample ‘Strong Side Effects’ report. Source: Safelyhq.com — Link

What can I do to help?

  • Share your vaccine experience! If you had a vaccine, our community would love to see your report, as we continue to get reports, we will update and expand our analytics. To share you experience click here.
  • Share this article! The more people are able to read other people’s experiences, the more we can help others on their vaccination journey.

How can I stay up to date with your work on Covid-19 Vaccines?

You are welcome to sign up to our free email list. Learn about new analysis , get the latest news, and get updates as new reports come in. To sign up click here.

What about Oxford, Johnson & Johnson and the other Vaccine Brands?

We have received reports for other vaccines but so far there is not enough data to include in this analysis. We would love you to share your experience if you had one of these vaccines. To share your experience click here.

Where can I see the reports and raw data?

You can view the reports on our covid-19 vaccine landing page here.

I got a Covid-19 vaccine, how can I participate and share my experience?

We welcome you to share your experience simply go to our covid-19 vaccine landing page and fill out the form as show below. To start click here

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How to share your Covid-19 Vaccine experience on safelyhq.com

Which countries have we received reports from so far?

 

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Covid-19 Vaccine Side Effects Reports by Country. Source: Safelyhq.com

Which states within the US participated so far?

We have received reports from most states in the US, with the highest participation coming from California, Texas, and Florida.

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Source of US Covid-19 Vaccine Reports by State. Source: Safelyhq.com

Notes about the data

  1. Sample Size: This data represents a sample of 250 vaccine recipients, 125 Moderna, and 125 Pfizer, from the US, Canada, and the UK (primarily US) between January 1st 2021 and March 5th 2021.
  2. Data Skew: This data is likely skewed toward older recipients and/or higher risk populations as they have been the priority recipients of vaccinations so far in the US.
  3. Reporting Bias: To the extent that there is reporting bias whereby those people with side effects are more likely to share their experience than those without side effects — the overall ‘no side effects’ numbers may be under reported. However, all other things being equal, the relative comparison between Pfizer and Moderna may still reflect a fair comparison.

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Tech 1 Scam, East Patchogue, NY, USA

3 weeks ago •reported by user-trjrk773

complete fraud. a bait and switch that was perpetrated across the internet network and cable This particular case would have cost so very much more than I paid, although I bought 3 of them! So it was almost $100 .
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ADM Animal Nutrition announced that specific lots may contain elevated levels of calcium, phosphorus, magnesium, sodium and/or chloride and may harm chickens, swine, beef cattle and equine. ADM (NYSE: ADM), is recalling the following products: Pen Pals® Chicken Starter-Grower 25-lb bag (Product No 70009ACF46); Pen Pals Chicken … See More
Starter-Grower 50-lb bag (Product No. 70009AAA44); Pen Pals Chicken Starter-Grower 25-lb case (Product No. 70009AAABE); MoorMan’s ShowTec Sale Burst w/DF DEN 50-lb. bag (Product No 21256CVWE4); MoorMan's Show-Tec Burst Starter with DFCTC/DEN 50-lb. bag (Product No: 24320AYWE4); ShowTec BB 18 BMD 50-lb. bag (Product No. 18241AGNE4); ShowTec 14.5/6 BMD 50-lb. bag (Product No. 14560AGN); AMPT-A CTC/IGR 50-lb. bag (Product No. 54229XNK); ShowTec Hi Fat 18 BMD 50-lb. bag (Product No. 18007AGN); Seniorglo 50-lb. bag (Product No. 10130AB) and MotivAte 12-15 DEN 50-lb. bag (Product No. 12286CVW). One customer reported chicken deaths related to consumption of the Pen Pals Chicken Starter-Grower 25-lb bags.

The lot number for the Pen Pals Chicken Starter-Grower 25-lb bags involved in this recall is Lot 507650QN. This product may contain elevated levels of calcium and phosphorus, which could lead to leg deformities, trouble standing and walking, and can be fatal to chickens. This product was distributed between Feb. 29, 2024 and March 8, 2024, and could have been purchased through distributors in Iowa and Missouri.

The lot number for the Pen Pals Chicken Starter-Grower 50-lb bags and Pen Pals® Chicken Starter-Grower 25-lb case involved in this recall is Lot 506942QN. These products may contain elevated levels of magnesium, which can cause bone deformities, slow growth rate, watery feces and can be fatal to chickens. These products were distributed between Feb. 28, 2024 and March 14, 2024, and could have been purchased through distributors in Missouri, Ohio, South Carolina, Iowa, California and Oregon.

The lot number for the MoorMan’s ShowTec Sale Burst w/DF DEN 50-lb. bags involved in this recall is Lot 506664QN. This product may contain increased levels of sodium and chloride, which can lead to reduced feed intake, thirst and diarrhea. This product was distributed between Feb. 16, 2024, and March 1, 2024, and could have been purchased through distributors in Iowa, Wisconsin and Colorado.

The lot number for the MoorMan’s ShowTec Burst Starter w/DF CTC/DEN 50-lb. bags involved in this recall is Lot 506640QN. This product may also contain increased levels of sodium and chloride. This product was distributed between Feb. 16, 2024, and March 1, 2024, and could have been purchased through distributors in Iowa, Wisconsin and Colorado.

The lot number for the ShowTec BB 18 BMD 50-lb. bags involved in this recall is Lot 506939QN. This product may also contain increased levels of sodium and chloride. This product was distributed between Feb. 16, 2024, and March 1, 2024, and could have been purchased through distributors in California, Illinois, Arizona, Missouri, and Iowa. The lot number for the ShowTec 14.5/6 BMD 50-lb. bags involved in this recall is Lot 507900QN. This product may contain increased levels of calcium, which could cause reduced feed intake and feed conversion. This product was distributed between March 8, 2024, and March 18, 2024, and could have been purchased through distributors in Iowa.

The lot number for the AMPT-A CTC/IGR 50-lb. bags involved in this recall is Lot 507828QN. This product may contain increased levels of sodium, which could cause loose stools and central nervous system issues. This product was distributed on March 1, 2024, and could have been purchased through distributors in Missouri.

The lot number for the ShowTec Hi Fat 18 BMD 50-lb. bags involved in this recall is Lot 505791QN. This product may contain increased levels of magnesium and calcium, which could cause reduced feed intake and feed conversion. This product was distributed between Jan. 26, 2024, and Feb. 7, 2024, and could have been purchased through distributors in Iowa, Oregon and California.

The lot number for the Seniorglo 50-lb. bags involved in this recall is Lot 505426QN. This product may contain increased levels of calcium, which could cause weight loss and the animal to become weak and listless. This product was distributed between Jan. 24, 2024, and Feb. 1, 2024, and could have been purchased through distributors in Missouri, Illinois, Ohio, Tennessee as well as from ADM locations in Glencoe, Minn., Springfield, Mo. and Dublin, Texas.

The lot number for the MotivAte 12-15 DEN 50-lb. bags involved in this recall is Lot 507330QN. This product may contain increased levels of calcium and phosphorus, which could cause reduced feed intake and feed conversion This product was distributed on Feb. 27, 2024, and March 4, 2024, and could have been purchased from ADM locations in Glencoe, Minn. and Columbus, Neb. After receiving a customer complaint related to swine refusing to eat feed from a single lot of MoorMan’s ShowTec Sale Burst w/DF DEN, ADM immediately investigated and discovered that the company’s animal feed manufacturing facility in Quincy, Illinois, experienced an equipment failure issue that impacted ingredient distribution in the plant.

The company initiated the recall once it was confirmed that these specific lots could contain harmful levels of calcium, phosphorus, magnesium sodium, and/or chloride. ADM has been in direct contact with the customers and distributors involved in this recall, and all product has been removed from retail shelves.

The lot number can be found at the bottom of the label. Customers who have purchased the recalled feed should immediately stop using it and return it to their distributor or directly to ADM Animal Nutrition for a full refund.

Company name: ADM Animal Nutrition
Brand name: Multiple Brand Names
Product recalled: Chicken Feed, Swine Feed, Cattle Feed, Horse Feed
Reason of the recall: Specific lots may contain elevated levels of calcium, phosphorus, magnesium, sodium and/or chloride and may harm chickens, swine, beef cattle and equine.
FDA Recall date: April 01, 2024

Source: www.fda.gov
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TECH 1 US, Flushing, Queens, NY, USA

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Nestlé USA has announced a recall of 440,500 Starbucks-branded ceramic mugs due to safety concerns. The mugs, which have a metallic coating, pose a burn and laceration hazard if microwaved or filled with extremely hot liquid. The company has reported 12 incidents of the mugs overheating or … See More
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The recalled mugs were sold in two sizes, 11 oz. and 16 oz., as part of four different gift sets during the 2023 holiday season. They were distributed at Target, Walmart, and Nexcom (military retail outlets) across the U.S. from November 2023 to January 2024. The recall does not affect any other Nestlé USA or Starbucks-branded products.

- Starbucks Holiday Gift Set with 2 Mugs (11 oz.). Retailer: Target.
- Starbucks Classic Hot Cocoa and Ceramic Mug (16 oz.). Retailers: Walmart, Nexcom.
- Starbucks Peppermint and Classic Hot Cocoa Ceramic Mug (16 oz.). Retailer: Target.
- Starbucks Holiday Blend Coffee and Mug (16 oz.). Retailers: Walmart, Nexcom.

In case you experience harm from this product, it is important to report it. It can help to detect & resolve issues and prevent others from being harmed, and it enables better surveillance. If symptoms persist, seek medical care.

Source: www.nestleusa.com
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