Sabra Klein is an American microbiologist who is a Professor of Molecular Microbiology and Immunology at the Johns Hopkins Bloomberg School of Public Health.
[3] She completed her doctoral research in behavioural neuroscience at Johns Hopkins Bloomberg School of Public Health, where she studied the sex and species differences in rodent immune function.
[6] To do this she monitored the immune response of Norway rats infected with Seoul orthohantavirus and showed that they have high numbers of regulatory T cells.
[11] In 2018 Klein was awarded $8 million from the National Institutes of Health to better understand how biological sex and age impact the efficacy of influenza vaccinations.
[12] As part of this research, Klein created a mechanistic study into how genetic and hormonal factors impacted mouse immunity.
[17] Klein has indicated that this biological sex dependent disparity in outcomes is common to many viral infections that impact the respiratory tract.