bIRV is developed by Pfizer Inc..

What are the side effects of bIRV?

Common side effects include Injection site pain (PAIN), Fatigue (FATIGUE), Headache (HEADACHE), Myalgia (MUSCLE PAIN), Chills (CHILLS), Injection site swelling (SWELLING).

What is the generic name of bIRV?

birv is the generic (nonproprietary) name of bIRV.

Last reviewed 2026-04-20 · How we verify

bIRV (birv)

Pfizer Inc. · Phase 2 active Quality 20/100

At a glance

Generic name	birv
Sponsor	Pfizer Inc.
Phase	Phase 2

Approved indications

No approved indications tracked.

Common side effects

Injection site pain (PAIN)
Fatigue (FATIGUE)
Headache (HEADACHE)
Myalgia (MUSCLE PAIN)
Chills (CHILLS)
Injection site swelling (SWELLING)
Arthralgia (JOINT PAIN)
Injection site erythema (REDNESS)
Pyrexia (FEVER)
Diarrhoea (DIARRHEA)
Vomiting (VOMITING)
Lymphopenia

Key clinical trials

A Study to Evaluate the Safety, Tolerability, and Immunogenicity of Combined Modified RNA Vaccine Candidates Against COVID-19 and Influenza (PHASE2)
A Study to Evaluate the Safety, Tolerability, and Immunogenicity of a Modified RNA Vaccine Against Influenza (PHASE1, PHASE2)

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

Source	Used for
ClinicalTrials.gov	Trial enrolment, design, endpoints, results