New Delhi: While tests for detection of Covid-19 have increased exponentially, there has been steady decline in country's positivity rate, said Health Ministry during a press briefing on Tuesday."Recovered Covid-19 cases are 3.4 times the number of active cases in the country," said a ministry official.For the first time, country's active cases of Covid-19 have reduced by 6,423 within a span of 24 hours, said Rajesh Bhushan, Secretary, Union Health Ministry.