Delhi’s ‘third wave’: On Tuesday, Delhi saw its highest spike since March when the pandemic first hit home. The previous record of daily numbers was 4,473 on 16 September. The most concerning bit is that the national capital also has high positivity rate of infection. Delhi govt officials, meanwhile, say the rise is on account of improved contact tracing and targeted testing. Further, they say, nearly 50 per cent of all cases in Delhi were coming from containment zones. Importantly, the spike in cases in Delhi has been accompanied with an increase in RT-PCR tests. Secondly, follow-up testing with RT-PCR