Serotype 3 Experimental Human Pneumococcal Challenge (EHPC) study protocol: dose ranging and reproducibility in a healthy volunteer population (challenge 3).

Hazenberg P, Robinson RE, Farrar M, Solorzano C, Hyder-Wright A, Liatsikos K, Brunning J, Fleet H, Bettam A, Howard A, Kenny-Nyazika T, Urban B, Mitsi E, El Safadi D, Davies K, Lesosky M, Gordon SB, Ferreira DM, Collins AM,