Anyone can get pneumonia, but certain groups do have a higher risk. These include--

Pregnant females

Infants from birth up to 2 years of age

People with chronic diseases such as diabetes, heart, liver and kidney iseases

Cancer patients

Hospitalized patients especially those on ventilators

People regularly exposed to lung irritants and toxic fumes

Smokers and heavy drinkers

People with mental disorders such as Parkinson's disease, schizophrenia, dementia etc.