4. Best Management Practices for Farm Biosecurity for Pig Production

4.4 People Entry

Refers to standard 2.2.4

Protocols must be established for entry into the RAZ by staff and by visitors through an entry room. This should include having a shower or at least using the Danish entrance method. In addition, written rules regarding the unidirectional movement through the barn by age sequence or health zones and other rules should be used. A visitor log and training log verifies compliance.

4.4.1 Entry of the CAZ

4.4.1.1 A protocol for entry to the CAZ (access point) should be included.

4.4.1.2 Consider a shower or boot change if walking on a driveway also used by off farm (travelling outside the CAZ) vehicles.

4.4.1.3 May restrict foot traffic along a specific route.

4.4.1.4 With the exception of employees, visitors (non-farm workers) entering the CAZ but not the RAZ must record their entry in the CAZ Visitors Log. An example is an electrician working on a generator located in a building outside the RAZ but within the CAZ. Those entering the RAZ would be recorded in the main Visitor Log.

4.4.2 Entry of the RAZ

4.4.2.1 To be effective and to encourage staff to follow protocols, the entry room to the RAZ must be kept clean. A protocol for routine cleaning of this area is necessary.

4.4.2.2 A protocol is needed for the entry of barn staff that prevents them bringing sources of contamination into the barnExample 1 and example 2.

Ensuring that staff and visitors comply with your barn entry 
protocol is critical to its success. You will have better compliance if the protocol is properly taught to employees and always modelled by management, no exceptions.

4.4.2.3 A rule regarding staff contact with pigs or animals other than those on this farm should be considered. Examples could be assisting at an accident involving a truck hauling pigs or visiting someone with backyard pigs. It may include downtime (days with not pig contact) and notification of the manager.

4.4.2.4 Protocols for staff regarding illness, particularly if it is infectious.

4.4.2.4.1 If staff exhibit influenza like symptoms, they should stay away from pigs.

4.4.2.4.2 Staff should be encouraged to be vaccinated with seasonal influenza vaccine.

Encourage seasonal flu vaccination for barn employees

4.4.2.5 The dirty: clean boundary could be a bench where clothing is changed or preferably a shower. The bench should have a solid and sealed bottom with a boot tray on the dirty side to avoid leakage of contaminated liquids to the clean side. A line on the floor is almost always an ineffective boundary; it is too easy to cross and to manoeuvre clothes and boot changes is difficult. An example of a change area in this Danish Entry procedure.

4.4.2.6 Showering to enter the RAZ

4.4.2.6.1 To be effective, following showering, the staff must not step onto the contaminated area where they just removed their street clothes. A shower where you can walk through is most effective. Example of a walk through shower with clean clothes on the far side.

Walk Through Shower

4.4.2.6.2 Describe the shower process in detail, indicating the use of soap and shampoo and whether underclothes are supplied. If not, what is the process for bringing personal clothes into the RAZ.

4.4.2.7 Danish Entrance: An acceptable alternative would be the Danish Entrance protocol which includes: changing to in-barn boots and coveralls and sanitizing hands at the dirty: clean barrier. Protocol plus interiorand exterior photographs of Danish Entrancefacility. The video below describes the Danish Entrance procedure.

4.4.2.8 Record biosecurity training events with staff in the General Log.

4.4.2.9 Include testing effectiveness of entry procedure using 'glow powder' and a UV light (apply the powder then UV light shows up wherever the powder contaminates surfaces).

4.4.3 Unidirectional Movement within the barn

4.4.3.1 Protocols regarding unidirectional movement within a barn from younger to older pigs and from healthy to unhealthy pigs.

4.4.4 Unconnected pig barns

4.4.4.1 Where buildings are not connected, there may be movement out of and back into the RAZ as described in the guide to develop the traffic flows in the CAZProtocols governing this movement should include.

4.4.4.2 Circumstances where it is allowed.

4.4.4.3 The sequence of the movement – is it unidirectional.

4.4.4.4 Exit and re-entry rules – Danish entry for instance or just a boot change.

4.4.4.5 Consideration of routes walked and dealing with surface contamination. With surfaces that have been sanitized and are visibly clean at the time of use, some farms consider walkways between barns part of the RAZ.

4.4.5 Entrance Signs

4.4.5.1 There should clear, obvious signs that give instructions to visitors such as a phone number to contact farm personnel, restrictions relating to entry, and directions for entry.

4.4.6 Visitor Protocols

4.4.6.1 Farm protocols for visitors entering the RAZ are needed (example)

4.4.6.2 Maintain a visitor log. The log should include the date, name, contact phone number, reason for visit, last pig contact and when.

4.4.6.3 Ask to be sure that visitors do not have signs of illness, particularly signs of influenza.

4.4.6.4 An appointment should be made by all visitors with the manager before coming to the farm. The visitor log should be checked by the manager before the visitor enters the shower or an interview type process can be done by the manger with the visitor to complete the visitor log book.

4.4.6.5 For foreign visitors, rules regarding entry may include:

4.4.6.5.1 No foreign visitors,

4.4.6.5.2 Approval by the farm manager or veterinarian first,

4.4.6.5.3 Requiring a specific number of overnights away from farms – the downtime depends on the level of risk (more for someone coming from a farm with PRRS going to a PRRS free farm) and cost of a disease break (more days for a breeding nucleus than a finisher barn with slaughter hogs).

4.4.6.5.4 Special entry protocols may be required.

4.4.6.5.5 Consider the farm and industry risk of foreign visitor entry, especially if from a country with Foot and Mouth Disease or another exotic pig disease.

4.4.6.6 Other protocols similar to staff.

4.4.7 For domestic visitors or service personnel, again, rules for entry may include

4.4.7.1 Approval by management or veterinarian. This may be based on 'need to enter' on some farms.

4.4.7.2 Downtime and special entry requirements.

4.4.7.3 Those with other pig contact, such as equipment repairmen or veterinarians.

4.4.7.4 Consideration of whether to allow exceptions (construction crews for example) and the effect it may have on staff compliance.

4.4.7.5 Other protocols similar to staff.

4.4.7.6 Written protocols for the entry of people into the CAZ and RAZ should be available for training and review.