Contents
1 Introduction
2. Purpose
3. Definitions
4. Applicable Legislation and Reference Materials
5. Roles & Responsibilities - Statement
5.1 NLC Responsibilities
5.2 Health, Safety & Environment Advisor (HSEA)
5.3 Emergency Response Preparedness (ERP) Committee
5.4 NLC First Aid Services
5.5 Supervisor
5.6 NLC Employees and students
6. Risk Identification, Assessment, Communication and Control
6.1 Risk Identification and Assessment
6.2 Risk Communication
6.3 Infection Control
7. Education
8. Work Procedures
9. Hygiene Facilities and Decontamination Procedures
10. Health Monitoring
11. Documentation
12. Program Review
Background
Influenza, commonly known as the flu, is a respiratory infection caused by the influenza viruses. A variety of strains of the influenza virus circulate year-round throughout the world, causing local outbreaks or epidemics. In Canada, influenza season usually starts in November and runs until April. It is estimated that approximately 10-25% of Canadian may get influenza each year. Although most of these people recover completely, as many as 8,000 Canadians die every year from pneumonia related to flu or complications of flu. Pandemic influenza is a global scale outbreak of human influenza. Last century three pandemics occurred as a result of a radical change that took place in the influenza A virus causing a new strain to emerge. Of particular importance, the influenza pandemic of 1918-1919 killed between 20 and 40 million people globally.
Pandemic defined
According to the World Health Organization (WHO), a pandemic can start when three conditions have been met:
A disease or condition is not a pandemic merely because it is widespread or kills many people; it must also be infectious. For instance, cancer is responsible for many deaths but is not considered a pandemic, because the disease is not infectious or contagious.
On the 24th April 2009, a new influenza virus A/H1N1 mixing swine, bird and human strains of the influenza virus were identified in the National Microbiology lab in Winnipeg, Canada. The virus has been confirmed to spread from human-to-human with an approximately 10% fatality rate. There are indications that the virus may be widespread. Avian influenza (or bird flu) is a contagious viral infection that mainly affects species of birds. Currently, a highly pathogenic avian influenza H5N1 strain is circulating in Asia, Europe, and Africa, infecting poultry populations and some humans, however for most Canadians, the risk of getting avian influenza is very low. At present, there is no validated evidence of transmission of the H5N1 strain from person to person.
This Influenza Virus Exposure Control Plan focuses primarily on seasonal influenza but can be applied to the prevention and control of pandemic influenza. In the event of a pandemic, actions will be taken under the direction of the Northern Lights College (NLC) Pandemic Plan and Regional Administration.
This control plan has been developed to:
The plan is applicable to all employees, students, contractors and visitors of NLC.
Communicable Period
The time during which an infectious agent may be transferred directly or indirectly from an infected person to another person, from an infected animal to human, or from an infected person to animal, including arthropods (insects and related species).
Contagious Period
The time period during which the influenza virus may be spread from person to person or from living object to nonliving object to living object (such as person to object to person).
Disinfection - The killing of infectious agents on objects and surfaces by direct exposure to chemical or physical agents.
Droplet precautions
Precautions that are taken to prevent the spread of infectious agents by droplet transmission.
Droplet transmission
The transmission of organisms, such as a bacteria or viruses, by large droplets (greater than 5 microns in diameter) produced by sneezing, coughing, talking or singing. These droplets are propelled a short distance (1 meter/3 feet or less) through the air and can come in contact with the eyes, nose, or mouth of another person, thus infecting them.
Host
A person or other living animal infected by an organism such as a virus. Epidemic The occurrence of cases of an illness (or an outbreak of illness) in a community or region more often than would normally be expected.
Influenza
An infectious disease that affects birds and mammals caused by RNA viruses of the family Orthomyxoviridae (the influenza viruses). Influenza is highly contagious and commonly affects the respiratory system. There are three known types of influenza virus – A, B, and C.
Incubation period
The time interval between initial contact with an infectious agent and the first appearance of symptoms associated with the infection. The time elapsed between exposure to influenza virus and when symptoms and signs are first apparent.
Isolation
The separation of an infected person or animal, during the communicable period of a disease, from others to prevent the spread of the infection to others.
Indirect transmission
The transmission of a pathogen from an infected person to an inanimate object and then to another person. Infection A condition in which organisms multiply within the body and cause a response from the host’s immune defenses. Infection may or may not lead to clinical disease.
Infection control
Activities aimed at the prevention of the spread of pathogens between people or animals.
Infectious agent
A disease-causing virus, bacterium, parasite, or other microbe.
Infectious disease
A disease of humans or animals resulting from an infection.
Immunity
Resistance to an infectious agent usually associated with the presence of protective antibodies or cells. Immunize
To make immune, that is able to resist a particular disease, most often through administration of a vaccine delivered by a needle.
Pneumonia
An inflammation of the lungs caused by infection.
Pathogen
Any organism capable of producing disease.
Quarantine
Restriction of the activities of well persons or animals who have been exposed to a case of communicable disease, during its period of communicability, in order to prevent transmission of that disease during the incubation period if infection should occur.
Respiratory etiquette
Simple tips to keep respiratory infections from spreading such as covering your nose and mouth every time you sneeze or cough; using a tissue when you blow your nose; putting used tissues in the trash; and washing your hands frequently, especially if you or someone you are close to is sick.
Social distancing
A way to reduce the risk of exposure to an organism, such as the the influenza virus, by reducing or avoiding contact with other people as much as possible.
Strain
A specific genetic variant of an organism.
Sub-clinical infection
The presence of an infection without recognizable signs or symptoms. Of importance because an individual may appear well although infected and thus be capable of spreading the infection to others. Supervisor
A NLC employee who instructs, directs, and controls employees and/or students in the performance of their duties and activities.
Surveillance
An on-going, systematic method for continuous monitoring of diseases in a population, in order to detect changes in disease patterns and implement prevention and/or control measures in a timely fashion.
Susceptible
A person or animal not possessing sufficient resistance against a particular pathogenic agent to prevent contracting infection or disease when exposed to the agent.
Symptoms
Any perceptible change in the body’s normal function, appearance or sensation which is experienced
by the patient and indicates a disease process.
Transmission
Any mechanism by which an infectious agent is spread from a source of infection to other persons or animals.
Vaccination
The act of administering a vaccine.
Vaccine
A dead or weakened form of an infectious organism that is injected into the body to stimulate an immune response, without causing disease, and thereby protect against subsequent infection by that organism.
Virus
A group of infectious agents characterized by their inability to reproduce outside of a living host cell. Viruses may subvert the host cells’ normal functions, causing the cell to behave in a manner determined by the virus.
Public Health Agency of Canada - Influenza
Canadian Centre for Occupational Health and Safety - Influenza
World Health Organization - Influenza
BC Centre for Disease Control – Influenza – “the flu”
WorkSafeBC – General Information about Avian Influenza WorkSafeBC – Regulation- Exposure Control Plans, NLC Pandemic Plan, NLC Emergency Response Preparedness Plan
NLC is committed to protecting the health of employees, students, and visitors. Employees and students shall be made aware of the potential risks of seasonal and pandemic influenza and protect themselves by following the precautions that are outlined in this Exposure Control Plan.
In the event of a major epidemic flu at NLC or a pandemic, actions must be taken under direction of the NLC Pandemic Plan and Regional Administration. The NLC HSEA, First Aid Services, the ERP Committee and other applicable stakeholders may hold a joint meeting to evaluate the risk for NLC. The risk identification and exposure assessment would be based on the following factors:
Health Effects
Symptoms of the different strains of influenza are similar but transmission efficiency and mortality can be quite different. Susceptible hosts infected with influenza viruses may develop the following symptoms:
The incubation period differs between different influenza strains but is typically about one to four days with an average of approximately two days. Risk of severe health effects from influenza exist, especially for those with:
Mortality strongly depends on the subtype of the flu strain. On average, seasonal flu has mortality of less than 0.5% in developed countries. The newly identified H1N1 flu virus is killing victims with fatality of 7-10%, while the more deadly avian flu has mortality up to 50%.
Transmission Routes
Influenza is primarily transmitted from person-to-person via virus-laden droplets generated when infected hosts cough or sneeze; these droplets can settle on the mucosal surfaces of the upper respiratory tracts of susceptible persons who are within 1-2 meter (about 6 feet) from infected persons. Transmission can also occur through direct contact or indirect contact with respiratory secretions such as when touching surfaces contaminated with influenza virus and then touching the nose, eyes or mouth. The communicable period typically lasts from 1 day prior to having symptoms to approximately 5 days after symptoms start. People with weakened immune systems may be infectious and able to spread influenza to others for 10 or more days after symptoms begin.
People at Risk of Exposure
The following groups of people would be at higher risk:
Work Environment
Handling or contacting ILI patients in environments that lack the controls to restrict transmission of the virus increase the risk of infection. Controls, as discussed in section 6.3, include appropriate personal hygiene, ventilation, work procedures, and personal protective equipment.
Season
From the global experience evidence suggests that, in temperate regions of the Northern Hemisphere, seasonal epidemics of influenza have greater chance to occur during the winter and spring. Pandemic, on the other hand, may happen in any season with 2-3 waves of infection following the first wave.
Other Risk Factors
In the event of a major flu epidemic or pandemic, the HSEA, First Aid Services, NLC ERP Committee, and other applicable stakeholders will issue health alert notices for all staff and students. This alert will be based upon the Risk Assessment in order to maintain effective hazard communication.
NLC employees and students should take the following measures to prevent infection of influenza viruses.
Personal Hygiene
Good personal hygiene is the key to reduce the risk of infection and the spread of influenza from an infected person to a healthy individual. The following hygiene practices are recommended:
Vaccination
Vaccination has proved an effective measure to prevent influenza and reduce the risk of implications from the flu. However, the effectiveness of flu shots highly depend on a variety of factors, which include, but is not limited to, matching between the vaccine and the circulating strain, the recipient’s age, and hosts’ health status and immunity. Local health units provide seasonal flu vaccinations prior to the arrival of influenza season each year and NLC reminds employees and students of the services on an annual basis. Additional vaccination may be provided in the event of pandemic, but will unlikely be available in the initial stages of pandemic. Those instructors and students conducting practicum in hospitals and health professionals such as First Aid Attendants and Health Programs staff are strongly recommended, and often required, to take influenza vaccine.
Ventilation
Ventilation is a type of engineering control which can help reduce airborne concentrations of virus and filter out other microbes.
Surveillance and Reporting
Epidemiological surveillance and early reporting play important roles in the prevention and limiting the spread of influenza. If a pandemic occurs, screening measures may be implemented at NLC if necessary.
Personal Protective Equipment
Use of personal protective equipment may be an effective approach to prevent influenza transmission. Personal protective equipment includes respiratory protection, eye protection and skin protection and
will be assigned based upon the results of the Risk Assessment. Facemasks and respiratory protection equipment must be appropriately chosen and fit-tested and must be stored or disposed properly. Students and instructors conducting practicum and/or working in healthcare settings shall follow the established guidelines for the setting including established work procedures.
Education is crucial for awareness, early detection and prevention.
Students and instructors conducting practicum in healthcare settings and/or performing analyses of human specimens in medical laboratories are required to strictly follow the work procedures, prevention guidelines and precautions established by the appropriate health authorities and the WHO.
Hygiene facilities for influenza prevention and control include, but are not limited to, general ventilation for bio-safety, local exhaust/fume hoods, quarantine wards, ventilator with HEPA filter for H1N1 or avian flu patients, sinks and hand sanitizer, eye washing facilities, change rooms, bio-safety waste containers, and facilities for disinfection.
Records of education on influenza and prevention will be kept following NLC records retention policy. Copies of records will be forwarded to Emergency Response preparedness Committee and Health, Safety & Environment Advisor upon requested.
This Control Plan will be reviewed annually for the following:
The annual review will be done in consultation with NLC Regional Joint Occupational Health and Safety Committee and NLC Emergency Response Preparedness Committee.
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