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Transparent access to VAERS data for informed decision-making. We present the data as-is, with appropriate context and disclaimers.

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Data source: VAERS (Vaccine Adverse Event Reporting System)

Data through 2026 · Updated quarterly

Built by TheDataProject.ai · © 2026 VaccineWatch

Important: VAERS accepts reports of adverse events following vaccination. For any given report, there is no certainty that the reported event was caused by the vaccine. Reports may contain information that is incomplete, inaccurate, coincidental, or unverifiable. Most reports to VAERS are voluntary, which means they are subject to biases. This data cannot be used to determine if vaccines cause or contribute to adverse events.

⚠️

Important: VAERS reports alone cannot determine if a vaccine caused an adverse event. Reports may contain incomplete, inaccurate, or unverified information. Correlation does not equal causation.

  1. Home
  2. Vaccine Side Effects
  3. Pneumonia Vaccine
6 min read
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Pneumonia Vaccine Side Effects

Pneumococcal vaccines protect against pneumonia, meningitis, and bloodstream infections. Given primarily to young children and adults 65+, these vaccines have extensive VAERS data spanning multiple formulations.

142,115
Total Reports
2,438
Deaths Reported
12,905
Hospitalizations
7
Vaccine Types

Most Commonly Reported Side Effects

#1Injection site erythema
17,519
#2Injection site pain
16,096
#3Pyrexia
15,935
#4Injection site swelling
13,846
#5Erythema
13,783
#6Pain
11,721
#7Pain in extremity
10,615
#8Injection site warmth
7,008
#9Chills
5,984
#10No adverse event
5,882
#11Cellulitis
5,501
#12Peripheral swelling
5,389

Types of Pneumonia Vaccines

  • Pneumovax 23 (PPV/PPSV23): Polysaccharide vaccine covering 23 serotypes — for adults 65+ and high-risk groups
  • Prevnar 13 (PCV13): Conjugate vaccine covering 13 serotypes — for children and some adults
  • Prevnar 20 (PCV20): Newer conjugate vaccine covering 20 serotypes — replacing PCV13+PPSV23 combo
  • Prevnar 21 (PCV21): Latest formulation with 21 serotypes

Expected Side Effects

Common:

  • Injection site pain, redness, and swelling (very common)
  • Fatigue and muscle aches
  • Headache
  • Low-grade fever
  • Joint pain (more common with Pneumovax 23)

Side effects are generally mild and resolve within 1-3 days. The conjugate vaccines (Prevnar series) tend to cause slightly more injection site reactions than Pneumovax.

Context for Death Reports

Pneumonia vaccines are primarily given to elderly adults (65+) and people with chronic health conditions. This population has a naturally higher mortality rate, so many death reports in VAERS reflect the background death rate of the recipient population rather than vaccine-related events.

Pneumococcal vaccines are recommended for young children and adults 65+. See timing on the CDC vaccine schedule and our 2026 vaccine schedule analysis.

⚠️ Remember: VAERS reports show correlation, not causation. Death reports in elderly vaccine recipients largely reflect background mortality rates.
TypeReportsDeathsHosp.
PPV71,1573054,359
PNC1333,0585933,225
PNC27,9701,4364,854
PNC207,15484347
PNC211,543854
PNC151,1881264
PNC104502

Explore This Data

Pneumovax Detail →
Full VAERS profile
Elderly Analysis →
Age 65+ patterns
All Side Effects →
Complete guide

2026 Safety Monitoring Update

As of mid-2026, the pneumonia (pneumococcal) vaccine continues to be monitored through VAERS and complementary surveillance systems including the Vaccine Safety Datalink (VSD) and the Clinical Immunization Safety Assessment (CISA) project. No new safety signals have been identified in recent data that would change the established safety profile of this vaccine.

The HHS administration's announced development of AI-powered VAERS analysis tools may provide additional insights into pneumonia (pneumococcal) vaccine adverse event patterns. These tools aim to detect subtle signals that traditional statistical methods might miss, though their implementation timeline and methodology remain under development.

It's worth noting that VAERS reporting for routine vaccines like pneumonia (pneumococcal) has remained stable through the post-pandemic period. While COVID-19 vaccine reports surged and then declined, reporting patterns for established childhood and adult vaccines have been remarkably consistent, suggesting that the VAERS system continues to function as designed for ongoing safety surveillance.

Understanding VAERS Data for pneumonia (pneumococcal)

When interpreting VAERS data for pneumonia (pneumococcal) vaccines, several key principles apply:

  • Reports ≠ Causation: A VAERS report means an event occurred after vaccination. It does not establish that the vaccine caused the event. Many reported symptoms are common health occurrences that would happen regardless of vaccination.
  • No denominator: VAERS does not track the number of doses administered. Without knowing how many people received the vaccine, raw report counts cannot be used to calculate risk rates or compare safety across vaccines.
  • Co-administration: Many vaccines are given at the same visit. When a VAERS report lists multiple vaccines, it's impossible to determine which vaccine (if any) was responsible for the reported adverse event.
  • Reporting variability: Healthcare provider awareness, media attention, and public concern all influence how many reports are filed. Changes in report volume may reflect changes in reporting behavior rather than changes in actual safety.

How to Use This Data Responsibly

VAERS data is most useful as a starting point for conversation with your healthcare provider, not as a basis for medical decisions. If you're concerned about pneumonia (pneumococcal) vaccine side effects:

  • Discuss your specific risk factors with your doctor or pharmacist
  • Ask about the relative risks of the disease the vaccine prevents vs. the vaccine itself
  • Consider your age, health status, and any previous vaccine reactions
  • Remember that clinical trials and post-market studies provide much stronger safety evidence than VAERS alone

For the most up-to-date safety information, consult the CDC's vaccine information pages or speak with a qualified healthcare professional.

More Resources

When Do Side Effects Start?
73% occur within 3 days of vaccination
Serious vs Non-Serious Outcomes
The full severity spectrum in VAERS
Report an Adverse Event
How to file a VAERS report
Our Methodology
How we process VAERS data

2026 Safety Monitoring Update

As of mid-2026, the pneumonia (pneumococcal) vaccine continues to be monitored through VAERS and complementary surveillance systems including the Vaccine Safety Datalink (VSD) and the Clinical Immunization Safety Assessment (CISA) project. No new safety signals have been identified in recent data that would change the established safety profile of this vaccine.

The HHS administration's announced development of AI-powered VAERS analysis tools may provide additional insights into pneumonia (pneumococcal) vaccine adverse event patterns. These tools aim to detect subtle signals that traditional statistical methods might miss, though their implementation timeline and methodology remain under development.

It's worth noting that VAERS reporting for routine vaccines like pneumonia (pneumococcal) has remained stable through the post-pandemic period. While COVID-19 vaccine reports surged and then declined, reporting patterns for established childhood and adult vaccines have been remarkably consistent, suggesting that the VAERS system continues to function as designed for ongoing safety surveillance.

Understanding VAERS Data for pneumonia (pneumococcal)

When interpreting VAERS data for pneumonia (pneumococcal) vaccines, several key principles apply:

  • Reports ≠ Causation: A VAERS report means an event occurred after vaccination. It does not establish that the vaccine caused the event. Many reported symptoms are common health occurrences that would happen regardless of vaccination.
  • No denominator: VAERS does not track the number of doses administered. Without knowing how many people received the vaccine, raw report counts cannot be used to calculate risk rates or compare safety across vaccines.
  • Co-administration: Many vaccines are given at the same visit. When a VAERS report lists multiple vaccines, it's impossible to determine which vaccine (if any) was responsible for the reported adverse event.
  • Reporting variability: Healthcare provider awareness, media attention, and public concern all influence how many reports are filed. Changes in report volume may reflect changes in reporting behavior rather than changes in actual safety.

How to Use This Data Responsibly

VAERS data is most useful as a starting point for conversation with your healthcare provider, not as a basis for medical decisions. If you're concerned about pneumonia (pneumococcal) vaccine side effects:

  • Discuss your specific risk factors with your doctor or pharmacist
  • Ask about the relative risks of the disease the vaccine prevents vs. the vaccine itself
  • Consider your age, health status, and any previous vaccine reactions
  • Remember that clinical trials and post-market studies provide much stronger safety evidence than VAERS alone

For the most up-to-date safety information, consult the CDC's vaccine information pages or speak with a qualified healthcare professional.

More Resources

When Do Side Effects Start?
73% occur within 3 days of vaccination
Serious vs Non-Serious Outcomes
The full severity spectrum in VAERS
Report an Adverse Event
How to file a VAERS report
Our Methodology
How we process VAERS data

More Side Effect Guides

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Shingles Side Effects
Another adult vaccine
COVID-19 Side Effects
1.1M+ reports analyzed