ARICELLA ZOSTER VIRUS

Uptick in 'off-season' chickenpox, herpes cases leaves patients, doctors stumped in Kolkata

An 'untimely' spread of chickenpox and herpes - both triggered by the varicella zoster virus - has left patients and doctors in Kolkata stumped this winter. It's usually during the February-April period that chickenpox cases are more frequently reported. But scores have been suffering from it since mid-December.