Salvaggio et al. 1971. This paper
presents the results of a 2 year study of the effect of meteorology, and pollen
and fungal concentrations on emergency room admissions for asthma at Charity Hospital in New Orleans. Authors found
relationship between ragweed counts and high asthma admission days. The authors also reported a negative effect
on asthmatics from total spore and pollen counts, especially during periods of
low RH, low wind velocity and high barometric pressure.