it is pnemonia .it can be prevented by following measuresThere are a number of steps you can take to help prevent getting pneumonia
• Stop smoking. You're more likely to get pneumonia if you smoke.
• Avoid people who have infections that sometimes lead to pneumonia.
o Stay away from people who have colds, the flu, or other respiratory tract
o If you haven't had measles
or if you didn't get vaccines against these diseases, avoid people who have them.
• Wash your hands often. This helps prevent the spread of viruses and bacteria that may cause pneumonia.
Vaccines to help prevent pneumonia are available. The vaccine for children is called the pneumococcal conjugate vaccine
(PCV). The vaccine for older adults (age 65 or older), people who smoke, and people who have some long-term (chronic) conditions is called thepneumococcal polysaccharide vaccine (PPSV)67