a. Mississippi’s Default Rule: Efficient Proximate Causation
[21] Link to KeyCite Notes[22] Link to KeyCite Notes The default causation rule
in Mississippi regarding damages caused concurrently by a covered and an
excluded peril under an insurance policy is that the insured may recover if the
covered peril was the “dominant and efficient cause” of the loss. Evana
Mut. Ins. Co. v. Boatner, 254 So.2d 765, 767 (Miss.1971) (quoting Kemp v. Am.
Universal Ins. Co., 391 F.2d 533, 535 (5th Cir.1968)).
FN5. See In re Katrina Canal Breaches Litig., 495 F.3d 191, 2007 WL 2200004,
at *26 (5th Cir. Aug.2, 2007) (“The efficient-proximate-cause doctrine applies only
where two or more distinct actions, events, or forces combined to create the
the insurance policy for a loss caused by a combination of a covered risk and an
excluded risk only if the covered risk. …. is one that sets the other causes in
motion that, in an unbroken sequence, produced the result for which recovery is
sought.”). Efficient proximate causation is distinct from two other etiological
doctrines occasionally employed in the insurance context: independent and
causes is a risk which is covered under the terms of the policy.”).
The Mississippi Supreme Court frequently employed this default rule in the welter
of insurance coverage cases that surfaced in the aftermath of Hurricane Camille.
It is also the rule the district court and the Leonards contend must apply here.
See Leonard, 438 F.Supp.2d at 694 (collecting cases). However, although the
Mississippi Supreme Court often premised recovery for policyholders on the
application of the efficient proximate cause rule, in actuality, in many of the
Camille cases the court did little more than uphold jury findings that the damages
suffered by policyholders were caused exclusively by wind, not by concurrent