Tamil Nadu

Basic demographic estimates:
2019, 2020, 2021 population: 75695, 76049, 76402 × 10³ (MoHFW (p160ff))
Yearly population growth: 0.46%
2018 crude death rate: 6.5 (SRS 2018 (Table 1))
CRS-SRS level of death registration (2015, 2016, 2017, 2018, 2019): 100%, 100%, 100%, 100%, 100% (CRS 2019, Statement 21)

Mortality report :
Whole state (2021-08-22): factsheet on all cause mortality in Tamil Nadu

Mortality data :
Civil registration data monthly from Jan 2018 to May 2021
Civil registration data Chennai monthly from Jan 2015 to May 2021
Civil registration data Chennai daily from 2000 to 2021

Articles on mortality:
The Hindu (2021-06-17). [whole state] [CRS data]. April 2020 to May 2021, inclusive. Calculations not fully presented.
The Hindu (2021-05-26). [Chennai][CRS data]. Wave 1: deaths during 2020 compared both to the previous five year average, and to 2019. Wave 2: rise in mortality beginning.

COVID-19:
Cases and recorded deaths (from covid19india.org):


IFR report for Chennai (2021-05-28): Estimates for 2020 based on a number of serosurveys, recorded COVID-19 deaths, and all cause mortality.

Expected COVID-19 IFR (O'Driscoll et al, Levin et al): 0.3216%, 0.542%.

COVID-19 seroprevalence surveys and analysis :
1. Whole state. TN state sero survey.

• Description:
• Dates: Oct 19-Nov 30, 2020
• Headline: 31.60%
• Links: medrxiv (technical)

2. Chennai. First Chennai serosurvey.

• Description:
• Dates: 17-28 July, 2020
• Headline: 18.4% (corrected)
• Links: CDC: Emerging Infectious Diseases (technical)

3. Chennai. Second Chennai serosurvey.

• Description:
• Dates: October, 2020
• Headline: 32.3% (raw)
• Links: The Hindu (news)

4. Chennai, Coimbatore, Tiruvannamalai. Second National Serosurvey.

• Description: data extracted from supplementary information of report on third national serosurvey
• Dates: Aug 18 to Sept 20 2020
• Headline: 16.44% (Chennai: 33.5%, Coimbatore: 7.2%, Tiruvannamalai: 8.5%)
• Links: Int J Infect Dis (technical)

5. Chennai, Coimbatore, Tiruvannamalai. Third National Serosurvey.

• Description: data extracted from supplementary information of report on third national serosurvey
• Dates: Dec 18, 2020 to Jan 6, 2021
• Headline: 32.74% (Chennai: 42.9%, Coimbatore: 24.3%, Tiruvannamalai: 31.1%)
• Links: Int J Infect Dis (technical)