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Infection Prevention Ebola Viral Disease (EVD). EBOLA PREPAREDNESS PLAN. INTRODUCTION TO EBOLA VIRUS DISEASE (EVD). An epidemic viral infection effecting multiple countries in West Africa including:. Liberia Sierra Leone Guinea. How Does Ebola Cause Disease?.
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Infection PreventionEbola Viral Disease (EVD) EBOLA PREPAREDNESS PLAN
INTRODUCTION TO EBOLA VIRUS DISEASE (EVD) An epidemic viral infection effecting multiple countries in West Africa including: • Liberia • Sierra Leone • Guinea
How Does Ebola Cause Disease? • Virus enters the body via infected blood/body fluid in contact with a mucosal surface or a break in intact skin • Virus replicates in many different cell types throughout the body • Strong cytokine/inflammatory response
How Does Ebola Cause Disease? • Endothelial damage, increased vascular permeability and shock • End organ damage and multi-organ dysfunction • Diffuse intravascular coagulopathy (DIC) with platelet and coagulation factor consumption leads to hemorrhage • IgM antibodies starts forming in 2 day and IgG antibodies form in 5-8 days post infection. Immunologic response correlates with survival
Isolation Practices: after positive infection screen • Place a mask on the patient until placed in isolation room • Airborne isolation • Environmental cleaning and disinfection of equipment • Appropriate waste disposal • Injection safety and prevention of sharps injuries GENERAL PATIENT CARE AND PRECAUTIONS
Ebola Virus Disease • Incubation 2-21 days • - In the current outbreak, in 90% of patients for whom information is available, <15 days • Case fatality ratio 24-89% • 54.9% for current outbreak • Average time between symptom onset and death is 7 days • Average time from symptom onset to recovery is 15 days
Transmission of EVD • EVD is transmitted through direct contact with blood or other body fluids of a symptomatic patient • Urine, breast milk, semen, saliva and tears may also carry risk – especially during later stages of illness • Whole virus has never been isolated from sweat of EVD patient • Risk of transmission from contaminated surfaces is exists, but is low and can be further reduced with appropriate cleaning and disinfection
Transmission of EVD • Unlike most viral illnesses, transmission is only possible from symptomatic patient • Increasingly infectious as patient becomes sicker
Risk Assessment Centers for Disease Control and Prevention, www.cdc.gov/vhf/ebola
PPE • A disposable coverall to cover clothing and exposed skin • N95 mask and eye protection (disposable goggles or face shield) to prevent splashes to the nose, mouth and eyes • Closed, puncture and fluid resistant shoe covers to avoid contamination with blood or other body fluids or accidents with misplaced, contaminated sharp objects. • Impervious shoe covers will be used • Gloves- double Education will be provided to all caregivers on use of PPE including donning and doffing of PPE
Taking off PPE • Use the Buddy System • Remove the most contaminated PPE items first. • Hand hygiene must be performed immediately after glove removal • Perform hand hygiene whenever ungloved hands touch contaminated PPE items • Be careful to avoid any contact between the soiled items (e.g. gloves, gowns) and any area of the face (i.e. eyes, nose or mouth) or skin • Discard disposable items in a biohazardous container located inside the room. Nothing is to be removed from the room until treated with bleach and double bagged in a manner to ensure no contamination to outside bag.
Hand hygieneHow to perform hand hygiene: • Clean your hands by rubbing them with an alcohol based formulation, as the preferred mean for routine hygienic hand antisepsis if hands are not visibly soiled • It is faster, more effective, and better tolerated by your hands than washing with soap and water. • Wash your hands with soap and water when hands are visibly dirty or visibly soiled with blood or other body fluids or after using the toilet
Visitors • Visitors will be restricted as determined by Public Health Department or the CDC. • Only essential staff members will be allowed in the patient care room
Laboratory Specimens • Limit testing only to those essential to diagnosis and care • All specimens will be double bagged and will be hand carried. No pneumatic tubes to be used for transport • CDC will guide EVD specific testing including packaging and transportation
Laboratory Specimens • Education specific to lab will be provided to ensure safety of lab personnel
Safe Injection Practices • Limit the use of needles and other sharp objects as much as possible. • Limit the use of phlebotomy and laboratory testing to the minimum necessary for essential diagnostic evaluation and patient care
Cleaning and Disinfecting • Environmental surfaces or objects contaminated with blood, other body fluids, secretions or excretions should be cleaned and disinfected as soon as possible using bleach wipes • Cleaning should always be carried out from “clean” areas to “dirty” areas, in order to avoid contaminant transfer
Management of Linen • When handling soiled linen from patients, use gloves, impervious gown, closed shoes (e.g., boots) and facial protection (mask and goggle or face shield) • No exposed skin • Linen used on patients or in patient rooms will be placed in the bio-hazardous waste container located in the patient room
The processes will be determined by the Local Health Department or CDC Contact local health department for instructions POST-MORTEM CARE AND TRANSFER OF BODIES
Sources: • http://www.cdc.gov/vhf/ebola/hcp/guidance-safe-handling-human-remains-ebola-patients-us-hospitals-mortuaries.html • http://www.cdc.gov/vhf/ebola/ • http://www.who.int/csr/resources/publications/ebola/evd-guidance-summary/en/ • http://www.who.int/csr/disease/ebola/protective-measures-staff/en/ • WHO Power Point titled “Key Measuresfor Prevention and Control of Ebola Virus Disease” by Dr. Sergey Eremin presented on September 16, 2014