Extreme Weather Events
Excessive cold/heat events
We are exploring the relationships between meteorological conditions
and spatial-temporal patterns of hospitalizations due to hypothermia
in the older adults residing in the USA. Low ambient temperatures
and extreme cold spells can cause hypothermia - a common yet
preventable condition, resulting in significant morbidity. 74,410
hospitalization records due to hypothermia were mapped over daily
meteorological measures abstracted from 1,979 stations nationwide
for 14 years.
We have used different classifications of heat waves / heat spells to
explore their potential effect on the change of gastro intestinal
infections (GI) in the major cities of the US.
We have developed methodology for estimating the number of elderly
affected by Atlantic storms in 1998-2002 using Geographical
Information System. Attempting to document historical status of
gastro intestinal infections (GI) among elderly (≥65yo) in the areas
affected by Hurricane Katrina in Louisiana and Mississippi, we
gathered information from various sources and described GI rates for
the two states from 1998 to 2002.
The Köppen climate classification system is the most widely used and
understood classification. We have suggested an adaptation of the
Köppen climate classification and have demonstrated its utility by
describing the incidence of campylobacteriosis, a disease caused by
thermo-sensitive bacteria in which diverse seasonal patterns have
been observed worldwide. By carefully studying these associations
and their underlying mechanisms, we hope to gain insights into the
factors that drive the emergence and seasonal/interannual variations
in contemporary epidemic diseases and, possibly, to understand the
potential future disease impacts of long-term climate change.
These research studies are supported by NIEHS R01ES 013171.
Lofgren ET, Wenger JB, Fefferman NH, Bina D, Gradus S,
Bhattacharyya S, Naumov YN, Gorski J, Naumova EN.
Disproportional effects in populations of concern for pandemic
influenza: insights from seasonal epidemics in Wisconsin, 1967-2004.
Influenza Other Respi Viruses. 2010 Jul;4(4):205-12.
Wenger JB, Naumova EN.
Seasonal synchronization of influenza in the United States older
adult population. PLoS One. 2010 Apr 15;5(4):e10187.
Chui KK, Webb P, Russell RM, Naumova EN.
variations and temporal trends of Salmonella-associated
hospitalization in the U.S. elderly, 1991-2004: a time series
analysis of the impact of HACCP regulation. BMC Public Health.
2009 Dec 3;9:447.
Jagai JS, Castronovo DA, Monchak J, Naumova EN.
cryptosporidiosis: A meta-analysis approach. Environ Res.
Muchiri JM, Ascolillo L, Mugambi M, Mutwiri T, Ward HD, Naumova
EN, Egorov AI, Cohen S, Else JG, Griffiths JK.
Seasonality of Cryptosporidium oocyst detection in surface waters of
Meru, Kenya as determined by two isolation methods followed by PCR.
J Water Health. 2009;7(1):67-75.