Worsening the situation , the area 's water supply has been contaminated by the huge volume of feces dropped by the caterpillars , the FAO said . Liberia declares emergency after hordes of ravenous caterpillars infest country . The caterpillar infestation is the worst in West Africa since a devastating outbreak nearly two decades ago, according to WHO, which has warned that it could spread across much of west Africa. Up to 350,000 people in 62 communities may have been affected .
Liberia declares emergency after hordes of ravenous caterpillars infest country . The caterpillar infestation is the worst in West Africa since a devastating outbreak nearly two decades ago, according to WHO, which has warned that it could spread across much of west Africa. Up to 350,000 people in 62 communities may have been affected .