Vu ses chiffres, le médecin pense q

Vu ses chiffres, le médecin pense qu’il y a une augmentation significative de la prévalence/ incidence de la SEP en Algérie ces dernières années mais on ne connait pas encore la cause (il s’agirait probablement d’une part d’environnement qu’on ne connait pas encore).

Results (English) 1:

Given its figures, the doctor thinks that there is a significant increase in the prevalence / incidence of MS in Algeria in recent years but we do not yet know the cause (it would probably be part of that environment 'we do not know yet).

Results (English) 2:

Given his figures, the doctor thinks that there is a significant increase in the prevalence/incidence of MS in Algeria in recent years but we do not yet know the cause (it would probably be a part of the environment that we do not yet know).

Results (English) 3:

According to his figures, doctors believe that there has been a significant increase in the prevalence / incidence of SEP in Algeria in recent years, but the reason is not clear ("this may be part of an environment that is not yet clear.")