SARS-CoV-2 Vaccine Clinical Trials Using ACTIV-Informed Harmonized Protocols

ACTIV advised on the protocol designs and endpoints to ensure a harmonized approach across multiple vaccine efficacy trials. The protocol enables analyses of correlates of protection across several vaccine trials being implemented under The Operation (formerly known as Operation Warp Speed) and activated at sites that are part of the NIH COVID-19 Prevention Network.

As vaccine clinical trials using these harmonized protocols are launched, NIH will list those studies on this page.

Ìý

SARS-CoV-2 Vaccine Clinical Trials Using

Harmonized Protocols Informed by ACTIV

photo of a doctor giving an injection to a patient
Agent Trial Phase Description More Information

Adjuvanted recombinant protein-based vaccine

Phase 1/2

Co-developed by Sanofi and GlaxoSmithKline,Ìýthis vaccine uses a recombinant protein-based technology. Participants will receive either a single intramuscular injection or two injections 21 days apart.The study expects to enroll 440 participants.

AZD1222

Phase 3

Developed by Oxford University’s Jenner Institute and Oxford Vaccine Group, and licensed to AstraZeneca for further development,Ìýthis vaccine uses a non-replicating adenovirus delivery system. Participants will receive two intramuscular injections approximately 4 weeks apart. The study expects to enroll about 30,000 volunteers.

JNJ-78436725
(Ad.26.COV2.S)

Phase 3

Developed byÌýJanssen Pharmaceutical Companies of Johnson & Johnson,Ìýthis vaccine uses a non-replicating adenovirus delivery system. Participants will receive a single intramuscular injection. The study expects to enroll up to 60,000 volunteers.

mRNA-1273.351

Phase 1

Developed by Moderna, Inc., this vaccineÌýuses the messenger RNA delivery platform and isÌýdesigned to protect against the B.1.351 SARS-CoV-2 variant. Participants will receive varying dosages. The study expects to enroll 60 volunteers who already have received the mRNA-1273 vaccine and 150 volunteersÌýwho have not received any COVID-19 vaccine.Ìý

mRNA-1273

Phase 3

Co-developed by Moderna, Inc., and NIAID,Ìýthis vaccine uses the messenger RNA delivery platform. Participants will receive two intramuscular injections 28 days apart. The study expects to enroll about 30,000 volunteers.
NVX-CoV2373 Phase 3 Developed by Novavax, Inc., this protein subunit vaccineÌýwas made using recombinant nanoparticle technology. Participants will receive two intramuscular injections 21 days apart. The study expects to enroll about 30,000 volunteers.

This page last reviewed on July 6, 2023