India, May 23 -- The Congress on Saturday demanded a judicial probe into the alleged use of "non-approved" ventilators for Covid-19s patients in the Bharatiya Janata Party (BJP)-ruled Gujarat. It alleged the Drug Controller General of India (DCGI) had not approved the ventilators and as a result the Covid-19-related mortality rate is the highest at the Ahmedabad Civil hospital where these machines were installed....