water	water	0.1374
drinking water	drink water	0.1374
infected	infect	0.1374
Stavropol	stavropol	0.0497
stanitsa	stanit	0.0497
Russia	rus	0.0497
people	peopl	0.0497
water from water	water from water	0.0497
hospitalised	hospit	0.0497
polluted	pollut	0.0497
RIA Novosti	ri novost	0.0497
started	start	0.0497
number of infected	number of infect	0.0497
children	childr	0.0497
water pipelines	water pipel	0.0497