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Following my @guardianopinion article, people asked which #mask I recommend. I won't recommend a specific brand or model but I can recommend features of masks that will enhance comfort and fit. This🧵relates to industry-certified masks. 1/ theguardian.com/commentisfree/…
#BetterMasks
#BetterMasks
2/ Firstly, what do I mean by 'industry-certified'? These respirators conform to (and have passed tests for) industry standards of filtration efficiency (at a minimum). To cut a long story short, mainly #N95/N99 (US), #FFP2/FFP3 (Europe/UK) & KF94 (Korea). theguardian.com/commentisfree/…
3/ Although these masks pass tests for how well they filter (capture) particles & aerosol, and all are excellent at doing this, the actual effectiveness of your mask also depends on how well it seals to your face. This also depends on your face shape/size. sciencedirect.com/science/articl… 
Thanks for the interest in my #mask tweets. For new followers: Pre-covid, I led a large project on effectiveness of #masks for the public, in relation to 🌋 ash exposures. I have extensive experience communicating to the public about mask wearing. ivhhn.org/information #IVHHN
Adding to my pinned tweet with links to each of my mask threads. In the tweet above I link to the 🧵about re-use of disposable masks.
Here, I link to the 🧵about the features of #BetterMasks which enhance comfort and fit:
Here, I link to the 🧵about the features of #BetterMasks which enhance comfort and fit:
Here is the 🧵about how the public do not need to be fit-tested in order to wear #BetterMasks (N95/FFP2 etc.)
With UK regs changing to mandatory #masks, here's a short 🧵to answer the question: can you wear a disposable #facemask more than once? The answer is YES. Many manufacturers state that masks should be disposed of after 8 hours but this is not true. Read on to find out why ... 1/
2/ Certified #masks (e.g. N95/N99, FFP2/FFP3) are manufactured for workers exposed to harmful airborne particles in industry or healthcare settings. The masks are designed to be worn for one shift (usually 8 hours) and then disposed of. Photo: @3MUK
3/ Unless a mask has become clogged full of particles in a very high exposure scenario (e.g. mining, construction) or the worker is in a contaminated front-line healthcare setting, it is still perfectly useable after 8 hours, unless it is broken. Photo: John Hamlett
Protect yourself from ash. As the eruption continues at #lasoufriere, SVG we share this information taken from the The International Volcanic Health Hazard Network #IVHHN on ash and its associated hazard. #volcano #stilldangerous #svg #uwiseismic
Volcan ash fall will be a pervasive hazard throughout St Vincent and is expected to reach neighbouring islands such as Barbados. Volcanic ash is not necessarily deadly but can lead to respiratory problems and may also impact vehicles and plane engines. #volcano #stilldangerous
Learn more about protecting yourself from ash as guided by the International Volcanic Health Hazard Network (IVHHN)
Volcanic ash information resources
ivhhn.org/information
Volcanic ash safety videos
ivhhn.org/information/iv…
Volcanic ash information resources
ivhhn.org/information
Volcanic ash safety videos
ivhhn.org/information/iv…
The Health Interventions in Volcanic Eruptions project has finished. It has been amazing and challenging in equal amounts!! I will be adding highlights to this thread over the coming days. Enjoy! #IVHHN
The consortium was made up of academic (@durham_uni, @GeofisicaUNAM, @univ_indonesia, Kagoshima Uni, @IOMworld) and stakeholder institutions (@PAHOemergencies, @pmi_diy @SaveChildren_ID) and funded by @Elrha/@wellcometrust/@DFID_UK.
The aim of the project was to determine the effectiveness of different kinds of respiratory protection worn by communities affected by eruptions, and to understand what cultural contexts influence people’s motivations to wear them. We worked in Indonesia, Mexico & Japan.
