is there any vaccine for it?
Yes, Influenza vaccines.
Pneumonia
Influenza vaccines are modestly effective at preventing symptoms of influenza, The Center for Disease Control and Prevention (CDC) recommends yearly influenza vaccination for every person 6 months and older. Immunizing health care workers decreases the risk of viral pneumonia among their patients.

Vaccinations against "Haemophilus influenzae" and "Streptococcus pneumoniae" have good evidence to support their use. 
who was yasser arafat? Palestinian political leader did he have any health issues? Yes, influenza followed by hemorrhagic cerebrovascular accident. what are the symptoms of the first decease? Mixture of symptoms of common cold and pneumonia. which alternative medicines are used for treating the first one mentioned in symptoms?? There is insufficient scientific evidence to support the use of most. which methods are used for diagnosing the second? Combination of physical signs and a chest X-ray.
wiki:5364029
Pneumonia [SEP] Vaccination
A "Streptococcus pneumoniae" vaccine is available for adults, and has been found to decrease the risk of invasive pneumococcal disease by 74%, but there is insufficient evidence to suggest using the pneumococcal vaccine to prevent pneumonia or death in the general adult population. The CDC recommends that young children and adults over the age of 65 receive the pneumococcal vaccine, as well as older children or younger adults who have an increased risk of getting pneumococcal disease. The pneumococcal vaccine has been shown to reduce the risk of community acquired pneumonia in people with chronic obstructive pulmonary disease, but does not reduce mortality or the risk of hospitalization for people with this condition.