Emergent Biosolutions is resuming production of Johnson & Johnson's COVID-19 vaccine at its Baltimore facility. Production was halted in April after components of the AstraZeneca vaccine, which was also being produced at the plant, were found to have contaminated a batch of Johnson & Johnson vaccines. The FDA also found a number of sanitation problems at the plant. The plant can produce up to 120 million doses per month. Deliveries of the vaccine are scheduled to begin in the fall.