"Samples of stool and blood of those infected are being tested at the NIV Pune lab, but yet to get any definite ... He said that the cause or link of GBS is found only in 40 per cent of cases.

NEW DELHI: Director General of Indiathe n Council of Medical Research (ICMR) Dr Rajiv Bahl said that they are still investigating the cause behind the sudden spike in Guillain-Barre Syndrome (GBS ...