Using ETCD CLI, the same can be dynamically updated in two files (VACCINE_ICD.json and ICD.json) without any service deployments.

Steps to update the vaccine name and its ICD-11 mapping:

• Go to the specific folder where etcd files are available.

• Open the files to add the new vaccine.

• Run the command: vim VACCINE_ICD.json.

• Run the command: vim ICD.json.

• To reflect the change, run the command: ./updateConfigs.sh. It shows "OK OK OK...." This means that the etcd has been updated with new vaccine list successfully.

• Create the certificate and generate the PDF with the new vaccine.

There are different International Classification of Diseases (ICD) codes based on the category of vaccines. To add a new vaccine, identify the ICD-11 code to which the vaccine belongs. Once you have mapped the vaccine to the relevant ICD-11 code, you can update the vaccine name and its ICD-11 mapping in etcd.

Steps to update the vaccine name and its ICD-11 mapping:

• Go to the Manage keys tab of the etcd-manager app. To add or update mappings, two keys must be updated: “VACCINE_ICD” and “ICD.”

• To add the vaccine name, ICD-11 code, and description VACCINE_ICD, go to VACCINE_ICD and click on the Edit key.

- Example of VACCINE_ICD value for Covaxin:

{“vaccineName”: “covaxin”, “icd11Code”: “XM1G90”}

• Click on Save. A popup will appear as “operation successful.” Click on Close.

• Click on the edit button of the “ICD” key to add ICD-11 code and click on the Edit key.

- Example of ICD value for Covaxin:

{“XM1G90”: {“vaccineType”: “inactivated virus”, “icd11Term”: “COVID-19 vaccine, inactivated virus”}}

• Click on Save. A popup will appear as “operation successful.” Click on Close.

• Make the certificate generation request call and fetch the certificate to test the changes. Once updated, any new certificate can be issued using the new vaccine name.