On reporting Covid19 deaths - The reported, differently reported and unreported:
Over the past weeks, we've seen multiple reports on differing number of Covid19 deaths.
While we continue to report the official numbers, here are some observations we've made along the way 👇
1/7
📌 Delay in reporting deaths: Skimming through detailed data on deaths released by limited number of states, shows that the reporting of deaths is delayed by days or even weeks. Eg. here is the KA bulletin of 19/04. Take a look at the date of death column.
2/7
📌 Deaths due to non-Covid reasons: Are all deaths of Covid19 +ve persons counted as a Covid19 death? Not in all cases. Few states periodically report deaths due to non-Covid reasons. This is usually determined by a committee that evaluates the cause of death.
3/7
➡️ We are capturing such instances of non-Covid deaths in the 'Other' column.
📢 Understand that certain deaths can be classified by states as not arising due to Covid19 and reported separately.
📢 If there are states omitting such cases, we call upon them to publish it.
4/7
📌 The unreported ones: As with any pandemic, a large number of our cases go undetected. What about deaths arising of undetected/untested cases? What about deaths that happen in home quarantine? What about unreported deaths?
These will exist outside the official reporting.
5/7
Excess death analysis and other follow up studies over time might help to bring out such unreported cases.
📣 It is our sincere call out to states to report Covid19 deaths with as much transparency as possible, that will instill and build public confidence.
6/7
📣 Multiple states have done delayed reconciliation of deaths - delayed data is better than no data at all. It is important the the right fatality data is available, so that the actual severity of the infection can be evaluated and communicated appropriately.
7/7
It is an ethical dilemma for us, when we see media report of deaths beyond the official ones. Are we furthering undercounting by adding them at our end? But, not adding them at all, would lead to a complete data vacuum. This provides a baseline for any additional deaths studies.
• • •
Missing some Tweet in this thread? You can try to
force a refresh
The effect of election campaigns in spike of Covid19 cases is best shown in the case of Kerala.
After a prolonged spike, cases were decreasing over Feb and early March 2021 in KL. TPR had dropped to around 4%.
Then, tests inexplicably dropped in the last 2 weeks of March.
1/4
The case trajectory started to take a swift turn immediately after April 6th, the date of voting.
✅ Testing started to move up and with it, so did daily cases. Testing > 1L now.
✅ From a 7 day avg. TPR of 5.9% on April 6, 7 day TPR has spiked to 17% as of yesterday.
2/4
✅ Active cases that were just short of 30k on April 6th, has now shot 6 times to 1.18L as of yesterday.
📣 The decreasing trajectory of cases in KL through Feb 2021 and subsequent increase immediately following the election campaign, directly points to the role played....
The dangerous spike in weekly TPR over last 2 weeks: Test Positivity Rate (TPR) has jumped to alarming levels across multiple states/UTs this week.
Take a look at the attached analysis that compares TPR between 4th - 10th April and 11th to 17th April 👇
1/5
Notable observations:
✅ CG has recorded a TPR of 29% this week, implying every 3rd person being tested is turning positive.
✅ MH has a high TPR of 24.7% this week, but is the only major state to have shown a decline in weekly TPR compared to last week.
2/5
✅ GA with 23.7% and MP with 19.9%, tails CG and MH wrt TPR this week.
✅ UP has shown a high % increase in weekly TPR, from a low 3.85% from 4 - 10 April to 9.8% from 11 - 17 April. In the same period DL moved from 6.7% to 16.27%.
3/5
Why are we advised to maintain 6 feet distance for safety? Is there a chance to catch Covid19 even if one is more than 6ft away from an infected person? Why is wearing masks critical?
We explore these questions in this short thread.
1/n
There are 4 main modes of transmission of respiratory viruses:
✅ Contact: Spread through direct contact with an infected person.
✅ Formite: Spread through touching surfaces/objects that carry the virus.
✅ Droplet: Spread through larger droplets exhaled by the person.
2/n
✅ Airborne: Spread through smaller droplets that remain suspended in the air over longer distances.
📌 Why 6ft distance?
Respiratory 'droplets' are larger particles that contain the virus. Droplet transmission happens in close proximity, generally within about 6ft.
3/n
Our data team has been hustling on the vaccination data side. Some challenges we've been grappling with:
✅ Multiple data sources - (a) MoHFW/PIB and (b) CoWIN APIs. Primary source?
✅ Data differences between the 2 sources.
So, we have some updates. Read on 👇
1/4
✅ We are tracking CoWIN and MoHFW/PIB updates separately now.
✅ CoWIN data, though behind MoHFW numbers, gives us a richer set of data points to track.
📣 In a significant development, we are now tracking DISTRICT VACCINATION data.
Source - CoWIN APIs.
2/4
MH reported 25.8k new persons with Covid19 today. Highest daily count for the state yet, surpassing 24.8k recorded on 11/09/2020.
How are the 2 spikes different? Few quick points:
➡️ More rapid rise in cases: In Sept. last year, it took a month to double the 7DMA from....
1/5
....10.5k cases/day to a 7DMA of 21k cases/day on 11th September.
Now, it has taken just 12 days for the 7DMA to double from 8k cases/day to 16k cases/day on 17th March.
The 7 day moving avg. graph of MH shows the steep slope for current spike. 👇
2/5
➡️ Larger spike in certain districts: There are a number of districts that are seeing a stronger wave this time than in September last year.
Aurangabad, Akola, Amravati, Buldhana, Nagpur, Nanded, Nashik, Parbhani, Wardha, Washim, Yavatmal: Current case load > Sept. 2020.
As we see an upward trend in cases, it's important to realise that we are seeing the natural course of the pandemic playing out.
➡️ Latest sero survey showed that a large % of us were still uninfected.
➡️ We've seen large social gatherings with most restrictions lifted.
1/6
➡️ Increased mobility across states, including crowded public transport.
➡️ New variants and possibility of waning antibodies.
➡️ Unfortunate non compliance to safety norms.
📣 It was only a matter of time that all these factors came together to result in another spike.
2/6
This time around, we have no national lockdown, rather we have activities back to 100% normalcy in most sectors and regions. This means that arresting the spread will be more challenging.
What can be done?
✅ One key study on the dynamics of transmission
3/6