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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.

  1. Home
  2. Vaccines
  3. RSV (Arexvy)
  4. CSF protein increased
RSV (Arexvy)×CSF protein increased

CSF protein increased Reports for RSV (Arexvy)

#131 most reported symptom for this vaccine

41
Reports
3
Deaths
37
Hospitalizations
7.32
Mortality Rate
%
90.2
Hosp. Rate
%

CSF protein increased and RSV (Arexvy)

CSF protein increased has been reported 41 times in association with RSV (Arexvy) vaccination in VAERS. This represents 0.4% of all 9,330 reports for this vaccine.

Among these reports, 3 mentioned death (7.32%) and 37 involved hospitalization (90.2%).

CSF protein increased is the #131 most frequently reported symptom for RSV (Arexvy) out of 947 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 41 reports of CSF protein increased after RSV (Arexvy) vaccination may seem alarming, but context is critical.

The 7.32% 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 CSF protein increased occurred after vaccination, not that the vaccine caused it.
•Background rates: CSF protein increased 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

Hypertension42 reportsFeeling cold41 reportsMagnetic resonance imaging40 reportsDelivery40 reports

Quick Facts

Reports:41
Deaths:3
Hospitalizations:37
% of Vaccine:0.4%
Rank:#131 of 947

Related Pages

RSV (Arexvy) OverviewCSF protein increased (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.