Long-term Alterations of Host-microbiome Interactions and Cardiovascular and Respiratory Diseases Progression After Pneumonia

Four blood samples will be taken outside standard care for groups A, B, C and D: at inclusion, M6, M18 and M30 (only at inclusion for group C).

An oropharyngeal swab will be taken to analyze patients\' upper airway microbiome at inclusion, M6, M18 and M30.

A calcium score will be taken at 30 months, to assess individual cardiovascular risk.

Performed at inclusion, M6, M18 and M30

Cardiopulmonary exercise test, spirometry, plethysmography, pulmonary absorption of carbon monoxide in a single inspiration, and 6-minute walk test: These tests will be performed consecutively for 2 hours at inclusion (6-minute walk test only), at M6 and at M30. These tests will be performed to assess respiratory and cardiac function.