…ent COVID-19 pandemic as patients self-isolate indoors. The study analysed data from two population-based case–control studies: the Genes and Environment in MS (GEMS) study (2009-2011), which included MS cases identified from the Swedish National MS registry (n=6156 cases, 5408 controls); and the Epidemiological Investigation of MS (EIMS) study (2005-2015), which included newly-diagnosed patients (n=2880 cases, 6122 controls). Patients identified…

…g may also be considered in progressive MS patients aged >60 years with no new inflammatory activity for >5 years. The full text of the Canadian MS Working Group treatment optimization recommendations can be downloaded for free at https://www.cambridge.org/core/services/aop-cambridge-core/content/view/6F71BA9F915D7AC1228BBB52EF3B8AD7/S0317167120000669a.pdf/treatment_optimization_in_multiple_sclerosis_canadian_ms_working_group_recommendations.pdf)….