Answer: Empyema 
Explanation: Empyema is the medical term for pockets of pus that have collected inside a body cavity. They can form if a bacterial infection is left untreated, or if it fails to fully respond to treatment. The term empyema is most commonly used to refer to pus-filled pockets that develop in the pleural space.
 
        
             
        
        
        
 The HIV virus is a virus that causes AIDS. The virus attacks a specific type of immune system cell in the body. HIV destroys these cells, making it harder for your body to fight off infections.
        
                    
             
        
        
        
How much of a drug should be given at one time
How often it should be given per day
How will the drug will be taken, for example: by mouth or intravenously
        
             
        
        
        
All the time it’s a part of life
        
                    
             
        
        
        
It helps your body get used to the allergen better. It just depends on the allergy.