First, let me thank all of the contributors to community, and especially the moderators, for the extremely helpful dialogue. I don't post often, but read frequently, and the conversations have inspired much of my thinking around TB-IPC, especially with regards to UVGI.
I work in a research setting in Malawi, and we'd like to explore the feasibility of installing UVGI in some of our clinic spaces. I've reviewed much of the literature published by Professor Nardell and colleagues, which has been instrumental in our even considering this as an option. I remain concerned however, that implementing and maintaining this technology in our setting may be very challenging. I'm curious if anyone here has implemented a UVGI system in a similarly resource-constrained setting and has any lessons to share. My specific concerns are as follows:
1. Ensuring regular supply of fixtures and bulbs. I have not had success finding any locally. The literature I've reviewed imported them from the US; while this is possible, it is expensive and not ideal.
2. Maintaining fixtures under irregular and hazardous power conditions. Frequent blackouts and power surges render the life of most electronics here. Any fixture would have to be durable to unexpected surges, and be able to run off generator power when grid power is switched off. Also, ensuring safe and adequate fluence rates given daily variance in power supply.
3. Servicing fixtures. I'm not sure that technical training for the regular cleaning and irradiance checks is readily available in our setting. While it doesn't sound overly complicated, I want to be careful as mistakes could obviously lead to harm of both technician and others using the room.
Contrary to how this list may make it sound, I do remain optimistic that we can get something working. I would appreciate any feedback from community members who have gone through this process, rather than trying to re-invent the wheel if someone has been down this path before.