The Department of Health and Human Services (HHS) intends to award sole source contract modifications to Allucent Government Services and ICON Government and Public Health Solutions, Inc. to support ongoing Phase 2b clinical trials for second generation COVID-19 countermeasures. The modifications will increase the maximum ordering amounts for both contracts by $150 million, raising the total from $400 million to $550 million, in response to FDA changes regarding the updated vaccine formula and the inclusion of a safety lead-in cohort. This procurement is critical for advancing public health initiatives related to COVID-19, with the notice open for responses until September 9, 2024, at 4:00 PM Eastern Standard Time. Interested parties can contact Ely Shannon at ely.shannon@hhs.gov or call 202-579-5891 for further information.