@misc{indiciae0765aa184d87, title = {Decrease in effectiveness of routine surveillance of Haemophilus influenzae disease after introduction of conjugate vaccine: comparison of routine reporting with active surveillance system.}, author = {B Olowokure and J Hawker and I Blair and N Spencer}, year = {2000}, doi = {10.1136/bmj.321.7263.731}, url = {https://pubmed.ncbi.nlm.nih.gov/10999903/}, note = {Source identifier: 10999903} }