Pneumonia is an infection caused by both bacteria and virus. It attacks the air sacs in one of both lungs. The infected sac(s) may fill with phlegm and cause cough and difficulty in breathing.
Spring is the happy ending of winter. It is the blossom season for plants but some people have allergies from flower pollens. It is the most beautiful time of the year but for those suffering from allergies, it is the most difficult time.