@misc{indiciae5268f499ee35, title = {Serologic screening, mass immunization, and implications for immunization programs.}, author = {M Grabowsky and L Markowitz}, year = {1991}, doi = {10.1093/infdis/164.6.1237}, url = {https://pubmed.ncbi.nlm.nih.gov/1955727/}, note = {Source identifier: 1955727} }