| Literature DB >> 31419294 |
Matthew B Laurens1, Andrea A Berry1, Mark A Travassos1, Kathy Strauss1, Matthew Adams1, Biraj Shrestha1, Tao Li2, Abraham Eappen2, Anita Manoj2, Yonas Abebe2, Tooba Murshedkar2, Anusha Gunasekera2, Thomas L Richie2, Kirsten E Lyke1, Christopher V Plowe3, Jessie K Kennedy4, Gail E Potter4, Gregory A Deye5, B K L Sim2, Stephen L Hoffman2.
Abstract
Direct venous inoculation of 3.2 × 103 aseptic, purified, cryopreserved, vialed Plasmodium falciparum (Pf) strain NF54 sporozoites, PfSPZ Challenge (NF54), has been used for controlled human malaria infection (CHMI) in the United States, 4 European countries, and 6 African countries. In nonimmune adults, this results in 100% infection rates. We conducted a double-blind, randomized, dose-escalation study to assess the infectivity of the 7G8 clone of Pf (PfSPZ Challenge [7G8]). Results showed dose-dependent infectivity from 43% for 8 × 102 PfSPZ to 100% for 4.8 × 103 PfSPZ. PfSPZ Challenge (7G8) will allow for more complete assessment by CHMI of antimalarial vaccines and drugs.Entities:
Keywords: zzm321990 Plasmodium falciparumzzm321990 ; controlled human malaria infection; cryopreservation; humans
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Year: 2019 PMID: 31419294 PMCID: PMC6834064 DOI: 10.1093/infdis/jiz410
Source DB: PubMed Journal: J Infect Dis ISSN: 0022-1899 Impact factor: 5.226