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McGeer Criteria — Infection Surveillance Tool
Revised McGeer Criteria (Stone et al., 2012 — SHEA LTCSIG) · NISPAC Australia · For Australian Aged Care
⚠️ 3 Guiding Principles (apply to ALL assessments): (1) All symptoms must be new or acutely worse from baseline. (2) Rule out non-infectious causes (medications, dehydration) before classifying as infection. (3) Do not base identification on a single piece of evidence — consider clinical picture, microbiology AND radiology together.
Lyndon Forrest
Managing Director | CEO
I am a passionate and visionary leader who has been working in the field of infection prevention and control in aged care for almost 30 years. I am one of the co-founders and the current Managing Director and CEO of Bug Control New Zealand and Australia, the premium provider of infection prevention and control services in aged care. I lead a team that is driven by a common purpose: to help aged care leaders and staff protect their residents from infections and create a healthier future for them.
I am building a business that focuses on our clients and solving their problems. We are focused on building a world-class service in aged care. We focus on being better, not bigger, which means anything we do is for our clients.
I am a passionate and visionary leader who has been working in the field of infection prevention and control in aged care for almost 30 years. I am one of the co-founders and the current Managing Director and CEO of Bug Control New Zealand and Australia, the premium provider of infection prevention and control services in aged care. I lead a team that is driven by a common purpose: to help aged care leaders and staff protect their residents from infections and create a healthier future for them.
I am building a business that focuses on our clients and solving their problems. We are focused on building a world-class service in aged care. We focus on being better, not bigger, which means anything we do is for our clients.
Erica Callaghan
Marketing Manager
Erica Callaghan is a dedicated professional with a rich background in agriculture and nutrient management. Growing up on her family's farm in Mid Canterbury, she developed a deep passion for farming. She currently resides on her partner's arable property in South Canterbury.
In 2017, Erica joined the Farm Sustainability team, focusing on nutrient management and environmental stewardship. In February 2024, she became the Manager of Marketing and Sales at Bug Control New Zealand - Infection Prevention Services, where her passion now includes improving infection prevention outcomes.
Outside of work, Erica loves cooking and traveling, often combining her culinary interests with her explorations in Italy and Vietnam. She enjoys entertaining family and friends and remains actively involved in farm activities, especially during harvest season.
Erica Callaghan is a dedicated professional with a rich background in agriculture and nutrient management. Growing up on her family's farm in Mid Canterbury, she developed a deep passion for farming. She currently resides on her partner's arable property in South Canterbury.
In 2017, Erica joined the Farm Sustainability team, focusing on nutrient management and environmental stewardship. In February 2024, she became the Manager of Marketing and Sales at Bug Control New Zealand - Infection Prevention Services, where her passion now includes improving infection prevention outcomes.
Outside of work, Erica loves cooking and traveling, often combining her culinary interests with her explorations in Italy and Vietnam. She enjoys entertaining family and friends and remains actively involved in farm activities, especially during harvest season.
Toni Sherriff
Clinical Nurse Specialist
Toni is a Registered Nurse with extensive experience in Infection Prevention and Control. Her career began as a kitchen hand and caregiver in Aged Care facilities, followed by earning a Bachelor of Nursing.
Toni has significant experience, having worked in Brisbane’s Infectious Diseases ward before returning home to New Zealand, where she continued her career as a Clinical Nurse Specialist in Infection Prevention and Control within Te Whatu Ora (Health NZ).
Toni brings her expertise and dedication to our team, which is instrumental in providing top-tier infection prevention solutions to our clients.
Toni is a Registered Nurse with extensive experience in Infection Prevention and Control. Her career began as a kitchen hand and caregiver in Aged Care facilities, followed by earning a Bachelor of Nursing.
Toni has significant experience, having worked in Brisbane’s Infectious Diseases ward before returning home to New Zealand, where she continued her career as a Clinical Nurse Specialist in Infection Prevention and Control within Te Whatu Ora (Health NZ).
Toni brings her expertise and dedication to our team, which is instrumental in providing top-tier infection prevention solutions to our clients.
Julie Hadfield
Accounts & Payroll
Julie is experienced in Accounts & Payroll Administration & after a long career in both the Financial & Local Government Sectors, is now working with our team. Julie brings her strong time management & organisational skills to our team, which is important to keep the company running in the background to enable the rest of our team to provide top notch service to all of our clients.
Julie is experienced in Accounts & Payroll Administration & after a long career in both the Financial & Local Government Sectors, is now working with our team. Julie brings her strong time management & organisational skills to our team, which is important to keep the company running in the background to enable the rest of our team to provide top notch service to all of our clients.
Andrea Murray
Content Editor
I attended Otago University in NZ and graduated as a Dental Surgeon. After 40 years in the profession, I retired in 2022. Infection prevention knowledge was part of everyday practice, dealing with sterilisation, hand hygiene, and cleaning.
Before retiring, I began doing some editing and proofreading for Bug Control as I am interested in the subject and in the English language. During the COVID-19 lockdown, I attended the ACIPC course "Introduction to Infection Prevention and Control", which increased my interest in the subject. I now work part-time as the Content Editor for the company.
I attended Otago University in NZ and graduated as a Dental Surgeon. After 40 years in the profession, I retired in 2022. Infection prevention knowledge was part of everyday practice, dealing with sterilisation, hand hygiene, and cleaning.
Before retiring, I began doing some editing and proofreading for Bug Control as I am interested in the subject and in the English language. During the COVID-19 lockdown, I attended the ACIPC course "Introduction to Infection Prevention and Control", which increased my interest in the subject. I now work part-time as the Content Editor for the company.
Personally, I lived in the UK for 10 years. My two children were born in Scotland, and now both are living in Europe, one in Amsterdam, Netherlands, and the other in Edinburgh, Scotland. I live close to Fairlie on the South Island of NZ, a beautiful part of the country, and I love being out of the city.
Princess
Customer Support
Princess began her career as a dedicated Customer Service Representative, honing her communication and problem-solving skills. She later transitioned into a Literary Specialist role, where she developed a keen eye for detail. Her journey then led her to a Sales Specialist position, where she excelled in client relations.
Now, as a Customer Support professional in Infection Prevention Services. Princess focuses on ensuring customer satisfaction, building loyalty, and enhancing the overall customer journey.
Princess began her career as a dedicated Customer Service Representative, honing her communication and problem-solving skills. She later transitioned into a Literary Specialist role, where she developed a keen eye for detail. Her journey then led her to a Sales Specialist position, where she excelled in client relations.
Now, as a Customer Support professional in Infection Prevention Services. Princess focuses on ensuring customer satisfaction, building loyalty, and enhancing the overall customer journey.
Dianne Newey
Senior Infection Prevention and Control Consultant
With over 35 years of experience as a Registered Nurse, I'm now applying all my experience and skills as a Senior Infection Prevention and Control Consultant with Bug Control Infection Prevention Advisory Services.
This is through IP&C education, IP&C environmental audits and reports, IP&C policy and procedure review and development and consultancy on infection prevention and control issues. When I’m not working, I spend time with my family and in my garden, where I grow all my own veggies.
With over 35 years of experience as a Registered Nurse, I'm now applying all my experience and skills as a Senior Infection Prevention and Control Consultant with Bug Control Infection Prevention Advisory Services.
In my role, I promote Infection Prevention and Control, to RACF's and disability support services.
This is through IP&C education, IP&C environmental audits and reports, IP&C policy and procedure review and development and consultancy on infection prevention and control issues. When I’m not working, I spend time with my family and in my garden, where I grow all my own veggies.
Caoimhe (Keva) Stewart
Clinical & Business Operations Manager
Caoimhe is the Manager of Customer Service at Bug Control | Infection Prevention Services, where she ensures that learners have a seamless and supportive experience. With her previous experience as a Registered Nurse in both the UK and Australia, Caoimhe brings a deep understanding of healthcare to her role. Before joining Bug Control IPS Services, she worked in a variety of nursing settings, including Occupational Health, Palliative Care, and Community Nursing, providing her with the ability to empathise with learners and understand the challenges they face.
Caoimhe is the Manager of Customer Service at Bug Control | Infection Prevention Services, where she ensures that learners have a seamless and supportive experience. With her previous experience as a Registered Nurse in both the UK and Australia, Caoimhe brings a deep understanding of healthcare to her role. Before joining Bug Control IPS Services, she worked in a variety of nursing settings, including Occupational Health, Palliative Care, and Community Nursing, providing her with the ability to empathise with learners and understand the challenges they face.
Her move from nursing to customer service was driven by her passion for helping others, not just in clinical settings but also in ensuring that people have access to the resources and support they need. Now, Caoimhe applies her problem-solving skills, attention to detail, and communication expertise to her role, helping to create a positive and effective learning environment for all students.
Outside of work, Caoimhe enjoys travelling, staying active, and catching up with friends on the weekends. Whether in healthcare or customer service, she’s dedicated to making a meaningful difference and supporting people in their personal and professional growth.
Bridgette Mackie
Clinical Nurse Educator
Bridgette is an experienced New Zealand Registered Nurse, qualified Healthcare Auditor, and Healthcare Educator with a strong background in clinical quality, competency assessment, and infection prevention. She has led large-scale OSCE and CAP training programmes for internationally qualified nurses, developed sector-specific educational resources, and coordinated HealthCERT audit preparation in the surgical sector.
Known for her engaging teaching style and genuine passion for supporting learners, Bridgette excels at making complex topics accessible and relevant. She blends operational leadership with a deep commitment to professional development and safe, effective practice.
Bridgette is an experienced New Zealand Registered Nurse, qualified Healthcare Auditor, and Healthcare Educator with a strong background in clinical quality, competency assessment, and infection prevention. She has led large-scale OSCE and CAP training programmes for internationally qualified nurses, developed sector-specific educational resources, and coordinated HealthCERT audit preparation in the surgical sector.
Known for her engaging teaching style and genuine passion for supporting learners, Bridgette excels at making complex topics accessible and relevant. She blends operational leadership with a deep commitment to professional development and safe, effective practice.