Table 3.

Data elements to be collected for part I (SARS-CoV-2 sewage surveillance and early warning and rapid public health response) and part II (COVID-19 immunity study) of the study

	Data for part I SARS-CoV-2 sewage surveillance and early warning	Data for part II COVID-19 immunity study
Data elements common for both part I and part II	Characteristics of the participating LTCF: number of residents and category of designated support living (DSL 1–4), proportion of residents who are diaper-dependent, number of staff working during the day and the evening, total number of staff working at the site, number of rooms with single accommodation and shared accommodation, private vs non-private providers COVID-19 outbreak history from the start of pandemic January 2020 to the end of the 18-month study: number of COVID-19 outbreaks, start and end date of each outbreak, number of COVID-19 tests performed during the outbreak investigation for each outbreak, number of confirmed and probable COVID-19 cases in staff and residents for each outbreak, vaccination history of confirmed and probable COVID-19 cases, number of symptomatic vs asymptomatic COVID-19 cases during the outbreak, number of hospitalisation and death related to COVID-19 in each outbreak Time frame, type of vaccine administered and % coverage of the staff and residents in the vaccination roll-out at the LTCF
Data elements specific each part of the study	Date of collection and the results of the SARS-CoV-2 in the sewage Any action initiated by public health after the report of the sewage results and findings Any change to outbreak start-date and end-date as related to the SARS-CoV-2 results in the sewage Number and duration of general COVID-19 outbreaks occurred in other LTCF (without site-specific sewage surveillance) Costs of the sewage sampling, testing, reporting Costs of targeted public health actions	Date of collection and results of the COVID-19 antibody tests for all participants at all time points Data to be collected from study participants: Dates of COVID-19 tests and results for the participant If tested positive for COVID-19, Hospitalisation Yes/No, ICU admission Yes/No, COVID-19 related death Yes/No Dates of vaccination if administered for the participant Reason of not getting vaccination: personal vs medical Any reaction to the vaccination If the participant is staff: Type of position and number of healthcare facility that the staff is working at If the participant is a resident Is the participant in a single or shared accommodation? Does the participant take meals in shared space with other residents?

LTCF, long-term care facilities.