Seminar Series NZ

Dry Surface Biofilms and their Role in Cross Infection

Date: Sunday 15th October 2017

Venue: The Grand Millennium Hotel, 71 Mayoral Dr, Auckland

Whiteley Medical is proudly sponsoring the educational seminar about the latest research findings on 'Dry Surface Biofilms and their Role in Cross Infection'. Continuing Professional Development (CPD) points are available by attending this seminar. Click here to view the program.

There are a range of high calibre speakers, all experts in their field, who will inform and enhance your understanding in the ever expanding realm of biofilms and their role in cross infection. Details are below:

Speaker Presentation Topic Educational Outcomes

Prof. Iain Gosbell
Speaker Profile

Transmission of Bacteria in Hospitals: The Importance of the Environment
  1. The ICU issue is
  2. Multi-resistant Organisms (MROs)
  3. Understand the different types of precautions in Infection Prevention
  4. How organisms get transmitted in healthcare settings
  5. The 7 habits of infection control
  6. Hand hygiene including the WHO 5 moments of hand hygiene
  7. Recognition of the importance of the innate environment to cross infection

Assoc. Prof. Karen Vickery
BVSc (Hons) (USyd), MVSc (USyd), PhD. (USyd)
Speaker Profile


Biofilm location, characteristics and content in ICU

  1. Evidence that the environment plays a role in the transmission of infection include:
    - Increased risk of HAI for patients in rooms previously occupied by infected patients
    - Increased cleaning decreases isolation of pathogenic bacteria from surfaces
    - Decreased contamination of surfaces results in decreased transmission
    - Pathogenic bacteria can persist on dry surfaces for months

  2. Biofilm (bacteria enclosed in a self-produced matrix) are present on >90% of ICU dry surfaces
  3. Biofilm bacteria have increased tolerance to desiccation, removal and biocides
  4. Biofilm detection is difficult due to low metabolic rate: live but non-culturable.
  5. How the analysis of clinical dry surface biofilms can inform the development of model test systems.
  6. Dry biofilm and disinfectant action

Assoc. Prof. Slade Jensen
B.Med.Sc. (USyd) PhD. (USyd) 
Speaker Profile


Genetic Similarities between organisms isolated from the ICU

How to determine/interpret relatedness between patient and environmental isolates in an ICU setting.

Dr Greg S Whiteley
B. App. Sc. (HAC), M. Safety. Sc. (UNSW), Dip. ACID (UNE) PhD. (WSU)
Speaker Profile


Integrated cleaning monitoring in ICU and Hand Hygiene
  1. Understand and apply the methods to infection prevention strategies for cleaning monitoring within their own heath care setting.
  2. Collect data from an ATP cleanliness monitoring sampling program and interpret the data correctly to avoid the pitfalls and risks using rapid ATP testing devices.

Dr Durdana Chowdury
MBBS, M. Phil (Medical Microbiology)
Speaker Profile


Biocide effectiveness at removing Dry Surface Biofilm
  1. DSB bacteria are transmitted most readily from environmental surfaces. Though the transmission rate is low, when compared with planktonic bacteria, sufficient numbers of bacteria were transferred to cause infection with bacteria still be transferred even after 20th consecutive touches.
  2. After treatment with neutral detergents number of bacteria reduced on but still be able to transmit the significant no of bacteria that are enough to cause disease manifestations. Thus, personal hygiene like changing gloves after each event and environmental cleaning is the most vital points to control infection in hospital environment.
  3. Chlorine is the most commonly used disinfectant for hospital surface cleaning which is not sufficient to remove dry surface biofilm. The protein removal efficacy of commonly used chlorine is lower than the chlorine contains surfactant.
  4. The efficacy of Peracetic is acid is higher than the all chlorine product. Therefore, to remove dry surface biofilm to reduce hospital acquired infection, an efficient disinfectant with proper application procedure is highly needed.


Click here to register for this event.