Saw-scaled Viper (West African)

Major cause of snakebites in West Africa. Antivenom shortage in region.

FamilyViperidae

GenusEchis

RegionAfricaWest Africa

Photo: malikibio · Source: GBIF · License: http://creativecommons.org/licenses/by-nc/4.0/

Saw-scaled Viper (West African)

Photo: malikibio · Source: GBIF · License: http://creativecommons.org/licenses/by-nc/4.0/

Saw-scaled Viper (West African)

Danger Score

Final Danger Score

Venom Core

Lethality weighted 55% (potency × yield). Clinical weighted 45% (real-world CFR).

0.55 × 49 + 0.45 × 7761.6

Modifiers

Multiplicative scalers - amplify or reduce existing danger, can't create it from nothing.

× Speed (1.01)62.2

× Delivery (1.00)62.2

× Encounter (1.04)64.7

Speed = antivenom window. Delivery = fang efficiency. Encounter = exposure × temperament.

Score65

Venom Profile

Type

HemotoxicTargets blood and circulatory system; disrupts clotting and can cause bleeding disorders.,CytotoxicDestroys cells and damages tissue; can cause permanent tissue damage and disfigurement.

Venom Yield

Low

Venom Speed

Quick

Delivery Method

Hinged front fangs

Potency (SC Equivalent)

0.720mg/kg LD50

Max Dry Yield

25mg dry

Clinical Severity

Fatality (Untreated)

15-30%

WHO Importance

Cat. 1

Local Effects

Pain at bite site, Swelling

Blood

Internal bleeding, Coagulopathy

Muscle

Kidney failure

Causes of Death

Massive internal bleeding, Kidney failure