Answer
Pneumonia was the unfortunate cause of Margaret Theresa's death. It is a respiratory illness caused by bacterial, viral, or fungal infections, leading to inflammation of the lungs' air sacs. Pneumonia can be severe, especially for the elderly and those with compromised immune systems. Symptoms commonly include cough, fever, shortness of breath, and chest pain. Treatment involves antibiotics, rest, and supportive care to aid recovery and prevent complications.