id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-258496-h264umt1	Jaakkola, Kari	Decline in temperature and humidity increases the occurrence of influenza in cold climate	2014-03-28		.txt	text/plain	4656	236	40	CONCLUSION: Our results demonstrate that a decrease rather than low temperature and humidity per se during the preceding three days increase the risk of influenza episodes in a cold climate. Studies from temperate and tropical climates have demonstrated that low temperature [4] and humidity increase the risk of seasonal influenza onset in the winter [5] [6] [7] [8] . Our previous study conducted in a northern climate demonstrated that the occurrence of respiratory tract infection is associated with both low temperature and humidity [15] . The objective of the present study was to examine the relations between temperature, humidity and the risk of influenza virus infections in a subarctic climatic zone in Northern Finland. Our hypothesis was that decreased daily temperature and humidity during outdoor training and associated with physical exercise would increase the risk of influenza A and B virus infection. Cold temperature and low humidity are associated with increased occurrence of respiratory tract infections	./cache/cord-258496-h264umt1.txt	./txt/cord-258496-h264umt1.txt