Worldwide trends for COVID19 pandemic in terms of cases and deaths:There is some ambiguity in timing the waves of the pandemic. This ambiguity is driven by the dynamics of the new cases and, to a lesser extent, deaths. Globally, we have exited Wave 3 that started around Week 34 of 2020 and peaked in Week 1 of 2021. Promising dynamics aside, latest level of new infections remains at the levels well above Waves 1 and 2 peaks.Weekly death counts have also peaked in Week 3 of 2021, marking the end of Wave 3. However, the latest death counts are the fifth highest on record and remain severely elevated compared to deaths recorded at the peak of Waves 1 and 2.Recent decreases in mortality rate are most likely attributable to three key drivers: (1) earlier detection of cases due to improved
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Worldwide trends for COVID19 pandemic in terms of cases and deaths:
Here is a summary table, with green cells showing improvements and red cells showing deterioration in dynamics:
Last week's deaths have shown an improvement on 4 weeks average in all regions world-wide, and this has been consistent across all (excluding Asia) regions also in terms of new cases 4 weeks average compared to prior 4 weeks average. Deaths, however, are still up on the 4weeks average relative to prior 4 weeks average basis in most regions, with exception of two.
For now, it is hard to attribute the above improvements to vaccinations (long term solutions) and the improved dynamics are probably more consistent with a natural flow of the pandemic wave, reflecting tightening of restrictions on social activities in virtually all major geographies following the holidays season. This, along with the rapidly growing prevalence of the new, more infective, strands of the virus suggests that the gains made in recent weeks are at a risk of reversals.