What infection prevention measures the best way for nursing assistant to prevent the spread of the disease?

Hand hygiene1
Summary technique:
Hand washing (40–60 sec): wet hands and apply soap; rub all surfaces; rinse hands and dry thoroughly with a single use towel; use towel to turn off faucet.
Hand rubbing (20–30 sec): apply enough product to cover all areas of the hands; rub hands until dry.
Summary indications:
Before and after any direct patient contact and between patients, whether or not gloves are worn.
Immediately after gloves are removed.
Before handling an invasive device.
After touching blood, body uids, secretions, excre- tions, non-intact skin, and contaminated items, even if gloves are worn.
During patient care, when moving from a contami- nated to a clean body site of the patient.
After contact with inanimate objects in the immediate vicinity of the patient.
2. Gloves
Wear when touching blood, body uids, secretions, excretions, mucous membranes, nonintact skin.
Change between tasks and procedures on the same patient after contact with potentially infectious material.
Remove after use, before touching non-contaminated items and surfaces, and before going to another patient. Perform hand hygiene immediately after removal.
3. Facial protection (eyes, nose, and mouth)
Wear a surgical or procedure mask and eye protection (face shield, goggles) to protect mucous membranes of the eyes, nose, and mouth during activities that are likely to generate splashes or sprays of blood, body uids, secretions, and excretions.
4. Gown
Wear to protect skin and prevent soiling of clothing during activities that are likely to generate splashes or sprays of blood, body uids, secretions, or excretions.
Remove soiled gown as soon as possible, and per- form hand hygiene.
5. Prevention of needle stick injuries2
Use care when:
handling needles, scalpels, and other sharp instru- ments or devices
cleaning used instruments
disposing of used needles.
6. Respiratory hygiene and cough etiquette
Persons with respiratory symptoms should apply source control measures:
cover their nose and mouth when coughing/sneezing with tissue or mask, dispose of used tissues and masks, and perform hand hygiene after contact with respiratory secretions.
Health care facilities should:
place acute febrile respiratory symptomatic patients at least 1 metre (3 feet) away from others in common wait- ing areas, if possible.
post visual alerts at the entrance to health-care facili- ties instructing persons with respiratory symptoms to practise respiratory hygiene/cough etiquette.
consider making hand hygiene resources, tissues and masks available in common areas and areas used for the evaluation of patients with respiratory illnesses.
7. Environmental cleaning
Use adequate procedures for the routine cleaning and disinfection of environmental and other frequently touched surfaces.
8. Linens
Handle, transport, and process used linen in a manner which:
prevents skin and mucous membrane exposures and contamination of clothing.
avoids transfer of pathogens to other patients and or the environment.
9. Waste disposal
Ensure safe waste management.
Treat waste contaminated with blood, body uids, secretions and excretions as clinical waste, in accord- ance with local regulations.
Human tissues and laboratory waste that is directly associated with specimen processing should also be treated as clinical waste.
 Discard single use items properly.
10. Patient care equipment
 Handle equipment soiled with blood, body uids, secretions, and excretions in a manner that prevents skin and mucous membrane exposures, contamination of clothing, and transfer of pathogens to other patients or the environment.
 Clean, disinfect, and reprocess reusable equipment appropriately before use with another patient.

Because it is under the health section, i would say chemo but idk much. i'm pretty sure it's either a machine or a pill. sorry if i am wrong