The number of cases of the mysterious illness, in Andhra Pradesh’s West Godavari district headquarters Eluru reached 593, but active cases had declined to 46 on Wednesday evening.
The remaining affected of the illness whose symptoms included three to five minutes of epileptic fits, forgetfulness, anxiety, vomiting, headache and back pain have been discharged.
West Godavari Joint Collector Himanshu Shukla, who called the outbreak a “point source epidemic”, said 10 more people are ready to get discharged.
Until now, 22 water samples have been tested, which showed E Coli to be normal while pesticide, organochlorine, has been found.
Likewise, 10 blood samples examined for heavy metals found a high presence of lead as well as nickel.
“Forty new samples of blood and urine were sent to the All India Institute of Medical Sciences (AIIMS), New Delhi for further investigation,” said an official statement.
The mystery illness that puzzled health officials in Eluru, seems to have been decoded, with experts pointing to lead and nickel, as the probable causes.
The sudden outbreak that left over 450 sick and one dead, saw patients suffering from severe nausea and fits.