In a study published in the medical journal PLOS ONE on February 5, researchers found that mice exposed to e-cigarette vapor are more at risk of becoming infecting with viral and bacterial infections. Some even died as a result.
Researchers from Johns Hopkins Bloomberg School of Public Health compared . one group pf mice, one of which was exposed to e-cigarette vapor for two weeks in a specially made inhalation chamber for mice. The chamber contained vapor and nicotine concentrations comparable to human e-cigarette use. The second group was exposed to only fresh air.