Yep, and if they dont get the Proper medication from NOW unitl 6 months from now, they will still have it all their life. At least 20 years.
Quite Nasty medication as well with difficult side effects. Pryquinine or somenthing like that. ( from Memory )
Bottom line ( no pun intended ) is that dehydrating during an emergency situation will "lay you out for the count" for weeks, if not kill you.
Your helpless and immobile, and you smell really bad. for months.
Blitzkreigen