'As a human guinea pig, Jesse Lazear helped Walter Reed prove this was spread by mosquitoes'
yellow fever
YELLOW THERE!: As a human guinea pig, Jesse Lazear helped Walter Reed prove this was spread by mosquitoes
As a human guinea pig, Jesse Lazear helped Walter Reed prove this was spread by mosquitoes
As a human guinea pig, Jesse Lazear helped Walter Reed prove this was spread by mosquitoes
YELLOW THERE!
yellow fever
YELLOW THERE!