id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-352433-sts48u9i	Galanti, Marta	Direct Observation of Repeated Infections With Endemic Coronaviruses	2020-07-07		.txt	text/plain	3824	170	41	BACKGROUND: Although the mechanisms of adaptive immunity to pandemic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are still unknown, the immune response to the widespread endemic coronaviruses HKU1, 229E, NL63, and OC43 provide a useful reference for understanding repeat infection risk. CONCLUSIONS: This study provides evidence that reinfections with the same endemic coronavirus are not atypical in a time window shorter than 1 year and that the genetic basis of innate immune response may be a greater determinant of infection severity than immune memory acquired after a previous infection. However, in Korea, as reported by the Korean Centers for Disease Control and Prevention, viable SARS-CoV-2 was not isolated in cell culture of respiratory samples from potentially reinfected individuals [5] ; thus, these subsequent positive results may have been due to inactive genetic material detected by molecular testing.	./cache/cord-352433-sts48u9i.txt	./txt/cord-352433-sts48u9i.txt