Reporting of recombinant adenovirus-based COVID-19 vaccine adverse events in online versions of three highly circulated US newspapers.

Newspapers' reporting of adverse vaccine events may influence their readers vaccination behaviors. The purpose of this study was to examine the nature and extent of coverage of Johnson and Johnson (J & J) vaccine's adverse events reported in the online versions of the three most widely circulated US daily newspapers from April 13-25, 2021. Articles were identified in published online versions of the three most widely cited newspapers in the United States, using several databases. Dedoose software was used to apply a mixed methods approach to the 110 articles identified. The seven overarching themes were as follows: (1) J & J vaccine characteristics (n = 78); (2) Description of the adverse events (n = 183); (3) Emphasis that it is a rare event and vaccine is still safe (n = 89); (4) Health authorities' investigation (n = 55); (5) Pause in administering J & J vaccine (n = 83); (6) Vaccine fear and anxiety and increased hesitancy (n = 58); (7) J & J role and impact (n = 108). Each theme included a series of subthemes. Overall, the newspaper coverage was aligned with handling of the pause from authoritative health agencies in the US. The findings of this study help to better understand how the US media covered adverse events related to the J & J vaccine, and provides insight for public health professionals regarding acceptance COVID-19 vaccines. Monitoring media coverage related to vaccine adverse events may help public health officials to develop new approaches to adequately inform the public, prevent misinformation, and maintain the optimal vaccination uptake.