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RACP: Kia ora Dr Douglas, thank you for finding time to speak to us today. Please tell us about yourself and your background.
Dr Douglas: I’m Nick. I’m 43 years old. I grew up in Christchurch, then left for varsity in 2000. I did a little bit of clinical training here in Christchurch, but I’ve largely been overseas for the last 20 years, a bit of time in the UK but mostly in Darwin, in the northern part of Australia. My current position is infectious diseases physician in Christchurch, but I also have roles with the University of Otago Christchurch Campus and with Menzies School of Health Research in Darwin, Australia. My academic activities include teaching medical students in their clinical years of training, as well as postgraduate students; I have three PhD students at the moment. I also conduct research. My areas of particular interest include malaria and leprosy. Our main collaboration with the leprosy work is with the National Leprosy Unit in Kiribati.
I have two kids – eleven and eight years old – and my wife also works as a neurologist here at Christchurch Hospital, so we’re fairly entwined in the medical world.
RACP: What got you interested in medicine and specifically in infectious diseases?
Dr Douglas: The event that made me acknowledge my interest in medicine was a teacher in intermediate school asking me “Hey Nick, have you ever thought about being a doctor?”. We were on a school camp in a place called Craigieburn, about an hour and a half away from Christchurch. As a class, we were climbing a little mountain, and as part of that we were running down a scree slope, and a friend of mine fell. He gave himself some nasty gashes on his legs, and I remember being very ‘in there’, wanting to help patch him up. I found it all very interesting and I was very pleased to be able to help him out, and my teacher mentioned to me afterwards that I should think about becoming a doctor.
I put that thought to the backburner, because I didn’t think I would get into medical school. I then remember having an important conversation with my dad a few years later, who knew I was interested in medicine. He said to me that “if you put your mind to it, I’m absolutely sure that you’ll get in”. It was really nice to hear that. I ended up putting my mind to it and sure enough, I got in.
In terms of Infectious Diseases specifically, I just find it really fascinating. There’s a lot of super interesting diseases, and I enjoy the interaction between the human world and the animal world. A lot of the tropical pathogens have really quite complex and highly evolved interactions with humans. I like that you can generally ‘fix’ people as well. It’s nice to be able to see people and say, “we think we know what’s going on and with treatment we should be able to cure you”. Generally, that comes true. I like the extensive interactions we have with other specialties around the hospital. We are primarily a consult service, so we spend a lot of time interacting with colleagues from all sorts of different specialties: surgeons, physicians, GPs and psychiatrists on occasion. Building up good relationships with all these people gives me a lot of pleasure in my job.
RACP: How does infectious diseases practice in New Zealand compare with elsewhere?
Dr Douglas: Every place in the world has its own standard set of infections, and regardless of where you are, that becomes your bread and butter. If you were in Ethiopia, you’d see malaria day-in, day-out. It would be a very uninteresting condition for you after a while, but a prosthetic joint infection might be unusual. In Christchurch, where I am, it’s definitely a big enough place that there’s a steady stream of people coming back from overseas with all sorts of conditions that are not endemic here, so there’s no shortage of exotic conditions to spice up the case mix.
Even in the stuff we see day-in, day-out, there is satisfaction in feeling like you can treat the condition effectively and efficiently.
RACP: What does a typical day look like to you?
Dr Douglas: There is a lot of variety, which is one thing that I really like about my job. A standard day might include an outpatient clinic, some inpatient consults or a Clinical MDT in the bone marrow transplant unit or ICU. I might have a research meeting with one of my PhD students and perhaps a bedside tutorial or lecture with the medical students. If time allows, I often try to do some manuscript editing or writing. A mixture of clinical and university work keeps things really interesting, but the workload can sometimes feel a little overwhelming.
RACP: What are some of the challenges infectious disease specialists face?
Dr Douglas: There’s the very well-known issue of antibiotic resistance. What that does for us is create this tension between treating the individual patient in front of you, versus protecting populations from antibiotic resistant organisms. I don’t think there are that many specialties where you have to think about individual benefit and population benefit at the same time. We’re always trying to reduce the usage of antibiotics, but when you have someone who is septic in front of you, it’s very hard to maintain a focus on population-level effects. There’s no doubt that antibiotic resistance is progressing, so our range of top-shelf antibiotics is diminishing as we go along, and antibiotic production is not keeping pace with progressive resistance at the moment.
Another issue is the huge amount of progress made in molecular diagnostic capability in the lab, with increasingly sensitive multiplex tests. Our knowledge of how to interpret those tests is lagging behind the actual technology. There are bugs everywhere in our bodies and in the environment, so trying to figure out which ones are important and which ones aren’t is becoming increasingly difficult as tests become more sensitive.
At a service-provision level, some of the smaller peripheral hospitals are really struggling to access specialist infectious diseases input, whether that’s phone consultations or in-person reviews.
RACP: Is AI used much in your work?
Dr Douglas: Infectious Diseases as a specialty is heavily focused on the quality and comprehensiveness of the history. I do not think that the specialty will be replaced by AI, in the near future at least. Having said that, there are examples of how AI is helping. One area that is close to my heart is diagnosis of malaria. Typically, the way you diagnose malaria is to do a finger prick, put a spot of blood on a slide, spread it out then look at it under a microscope to see if the parasite is present in any of the red blood cells. It’s pattern recognition, so there’s encouraging evidence that if you take quality photographs through a microscope of the slides, you can get a computer to tell you whether malaria is there. AI might have some uses, but in terms of clinical diagnosis from patient interactions, I think it’s a while away.
RACP: What differences did you find working in Australia compared to New Zealand?
Dr Douglas: Different diseases. In Darwin, they had some reasonably unusual infections because of the tropical environment. One of the common causes of pneumonia there is Melioidosis, caused by Burkholderia pseudomallei, which is a bug that lives in wet soil in warm environments, and has quite specific treatment protocols.
Largely the systems are pretty similar. One thing that I noticed was that there was access to a much more extensive range of anti-infective medicines. In New Zealand, we’re more restricted in terms of what we can use, and in general I think appropriately so. There were also differences in cultural aspects of care there. Darwin has a very large aboriginal population with unique health needs that are not always well-catered for by the western medical system.
RACP: What would your advice be to trainees or medical students considering a specialisation in infectious diseases?
Dr Douglas: I get approached by students and junior doctors interested in Infectious Diseases quite a lot. I think there are lots of opportunities for students to get involved in infectious diseases and global health work within their electives, so I often suggest they explore their interests further during these placements. I encourage them to go to places with really different health systems and different diseases to New Zealand. I love discussing all the benefits of Infectious Diseases that I mentioned before. I also try to be honest about some of the potential downsides. Infectious diseases is not a specialty that lends itself well to private practice so earning potential is not a big drawcard. It’s also not a good specialty to do if you’re keen on keeping up a regular procedural component to your work.
RACP: What do you do to de-stress or relax?
Dr Douglas: I really like the mountains, and Christchurch is a great place to work for access to wild places. I love going tramping and I do some climbing as well. I’ve recently taken over responsibility for a stoat trap line at Arthur’s Pass to help with native bird conservation there. I’ve recently joined a small a capella singing group and I’m really enjoying that.