I used the database ABI/INFORM. I did have some luck with both the subject search and the citation traces to find some new and useful sources that will be potentially helpful to me. My topic was about the Covid-19 vaccination cards. Since Covid is newer and started a little over a year ago, a lot of my searches were recent and informative.
 
Subject Search
Database: ABI/INFORM Collection
Waller, J., Rubin, G. J., Potts, H. W. W., Mottershaw, A. L., & Marteau, T. M. (2020). ‘Immunity passports’ for SARS-CoV-2: An online experimental study of the impact of antibody test terminology on perceived risk and behaviour. BMJ Open, 10(8)http://dx.doi.org.ezproxy.fhsu.edu:2048/10.1136/bmjopen-2020-040448
New sources: 47
 
Citation Trace-backward
Database: ABI/INFORM Collection
Phelan, Alexandra L. (2020). COVID-19 immunity passports and vaccination certificates: Scientific, equitable, and legal challenges. The Lancet (British Edition), 395(10237), 1595-1598.
Sources cited it: 114
 
Citation Trace-Forward
Database: ABI/INFORM Collection
Voo, T. C., Reis, A. A., Thomé, B., Ho, C. W. L., Tam, C. C., Kelly-Cirino, C., Emanuel, E., Beca, J. P., Littler, K., Smith, M. J., Parker, M., Kass, N., Gobat, N., Lei, R., Upshur, R., Hurst, S., & Munsaka, S. (2021). Immunity certification for COVID-19: Ethical considerations. World Health Organization.Bulletin of the World Health Organization, 99(2), 155-161. http://dx.doi.org.ezproxy.fhsu.edu:2048/10.2471/BLT.20.280701
Cited by: 4