Tian Y, Liu H, Wu Y, et al. - Researchers conducted a national time-series study in 8,834,533 hospital admissions for cardiovascular causes in 184 Chinese cities recorded by the national database of Urban Employee Basic Medical Insurance from January 1, 2014, to December 31, 2017, in order to determine the risks of daily hospital entries for cause particular major cardiovascular diseases correlated with short term exposure to ambient fine particulate matter (aerodynamic diameter ≤ 2.5 μm; PM_2.5) pollution. Average of 47 hospital admissions per day were reported for cardiovascular disease, 26 (53), for ischaemic heart disease, one (five) for heart failure, two (four) for heart rhythm disturbances, 14 (28) for ischaemic stroke, and two (four) for hemorrhagic stroke. Finding implies that in China, for all major cardiovascular diseases except for hemorrhagic stroke, short term exposure to PM_2.5 was correlated with raised hospital admissions, even for exposure levels not exceeding the up to date regulatory limits.