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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.

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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.

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  4. Blood sodium decreased
COVID-19 Vaccine×Blood sodium decreased

Blood sodium decreased Reports for COVID-19 Vaccine

#394 most reported symptom for this vaccine

1,530
Reports
129
Deaths
1,204
Hospitalizations
8.43
Mortality Rate
%
78.7
Hosp. Rate
%

Blood sodium decreased and COVID-19 Vaccine

Blood sodium decreased has been reported 1,530 times in association with COVID-19 Vaccine vaccination in VAERS. This represents 0.1% of all 1,121,388 reports for this vaccine.

Among these reports, 129 mentioned death (8.43%) and 1,204 involved hospitalization (78.7%).

Blood sodium decreased is the #394 most frequently reported symptom for COVID-19 Vaccine out of 9223 total symptoms.

Disclaimer: VAERS reports describe events that occurred after vaccination but do not establish that the vaccine caused the event. Many reported symptoms may be coincidental or related to underlying conditions.

What This Means

Seeing 1,530 reports of Blood sodium decreased after COVID-19 Vaccine vaccination may seem alarming, but context is critical. With 1,121,388 total reports for this vaccine (representing many millions of doses), Blood sodium decreased appears in only 0.1% of reports.

The 8.43% mortality rate among these reports is elevated, but this reflects the severity of the condition itself rather than vaccine causation.

Important Context

•Association, not causation: These reports show Blood sodium decreased occurred after vaccination, not that the vaccine caused it.
•Background rates: Blood sodium decreased may occur naturally at baseline rates in the population, unrelated to vaccination.
•Anyone can report: VAERS accepts reports from anyone — patients, parents, healthcare providers — without requiring medical verification.
•Denominator missing: VAERS counts reports, not rates per dose. Without knowing how many doses were given, raw counts can be misleading. Learn more →

Similarly Ranked Symptoms

Ventricular extrasystoles1,541 reportsMass1,532 reportsNeurological symptom1,508 reportsInfluenza B virus test1,504 reports

Quick Facts

Reports:1,530
Deaths:129
Hospitalizations:1,204
% of Vaccine:0.1%
Rank:#394 of 9223

Related Pages

COVID-19 Vaccine OverviewBlood sodium decreased (All Vaccines)Why Raw Numbers MisleadTop Symptoms Analysis

Data Source

This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.