Grand Challenges: Environmental niches of Salmonella Typhi (Round 23)
https://gcgh.grandchallenges.org/challenge/environmental-niches-salmonel...
deadline  April 10, 2019, 11:30 AM PDT

Interested in understanding:
Studies of S. Typhi in the context of soil and water microbiomes, with clear implications for survival, virulence, or antibiotic resistance.  
Examining survival of S. Typhi within or in the presence of free-living protozoans.
Examining the role of the environment (soil, water, residual antibiotics) in the development of AMR in S. Typhi.
Transcriptome analysis and mutagenesis of S. Typhi to identify genes associated with particular environmental niches.

Grand Challenges: Increasing Demand for Vaccination Services (Round 23)
https://gcgh.grandchallenges.org/challenge/increasing-demand-vaccination...
deadline  April 10, 2019, 11:30 AM PDT

Challenge (1) Novel approaches for providing practical knowledge about vaccines and vaccination services to caregivers;
Challenge (2) Novel ideas for improving the convenience and/or caregiver seeking of vaccination services.