Efalizumab can lower blood cells that help your body fight infections, making it easier for you to bleed from an injury or get sick from being around others who are ill.

Lamivudine and zidovudine can lower blood cells that help your body fight infections.

Using a steroid can lower the blood cells that help your body fight infections.

Steroids can lower the blood cells that help your body fight infections, making it easier for you to get sick from being around others who are ill, or from bacteria in a skin wound.

Steroids can lower the blood cells that help your body fight infections.

The immune system helps your body fight infections.

Helps you maintain a healthy weight Provides your body the energy it needs Supplies enough calories, keeping breathing and other muscles strong Helps your body fight infections by strengthening your immune system When you have COPD, you may need to make some diet changes.

Amphotericin B may lower the blood cells that help your body fight other infections.