NEW : CDC confirms 153 cases of Enterovius D68 in 18 states . They also confirmed four cases of EV - D68 . Enteroviruses are very common . Canada confirms three cases in British Columbia . Virus worsens breathing difficulties for people who have asthma .
NEW : CDC confirms 153 cases of Enterovius D68 in 18 states . They also confirmed four cases of EV - D68 . Canada confirms three cases in British Columbia . Virus worsens breathing difficulties for people who have asthma .