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Volume 28, Number 3—March 2022
Synopsis

Airborne Transmission of SARS-CoV-2 Delta Variant within Tightly Monitored Isolation Facility, New Zealand (Aotearoa)

Andrew Fox-LewisComments to Author , Felicity Williamson, Jay Harrower, Xiaoyun Ren, Gerard J.B. Sonder, Andrea McNeill, Joep de Ligt, and Jemma L. Geoghegan
Author affiliations: Counties Manukau District Health Board, Auckland, New Zealand (A. Fox-Lewis); Auckland District Health Board, Auckland (F. Williamson, J. Harrower); Institute of Environmental Science and Research, Porirua, New Zealand (X. Ren, G.J.B. Sonder, A. McNeill, J. de Ligt, J.L. Geoghegan); University of Amsterdam, Amsterdam, the Netherlands (G.J.B. Sonder); University of Otago, Dunedin, New Zealand (J.L. Geoghegan)

Main Article

Figure 1

Timeline of infectious periods, test results, and relative locations of persons A–F, implicated in airborne transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Delta variant between separate nonadjacent rooms within a tightly monitored MIF, New Zealand. Colors indicate persons A–F; bars represent each person’s infectious period of 10 days after symptom onset or the first positive rRT-PCR test. Syringe symbol indicates person was fully vaccinated against coronavirus disease. Person A occupied room 277 and travel group BCDEF occupied adjoining rooms 276 and 278 on the opposite side of the corridor in block 2 of the MIF. The doors to the rooms were 2.135 m apart. Map-arrow symbols indicate country of origin (Philippines and United Arab Emirates); airplane symbols denote date of arrival in New Zealand. Episodes of simultaneous door-opening between room 277 and rooms 276/278, each lasting 3–5 seconds, are indicated with ↓1 to ↓4. Positive SARS-CoV-2 rRT-PCR test results are indicated by (+); negative rRT-PCR test results are indicated by (–). MIF, managed isolation facility; MQF, managed quarantine facility.

Figure 1. Timeline of infectious periods, test results, and relative locations of persons A–F, implicated in airborne transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Delta variant between separate nonadjacent rooms within a tightly monitored MIF, New Zealand. Colors indicate persons A–F; bars represent each person’s infectious period of 10 days after symptom onset or the first positive rRT-PCR test. Syringe symbol indicates person was fully vaccinated against coronavirus disease. Person A occupied room 277 and travel group BCDEF occupied adjoining rooms 276 and 278 on the opposite side of the corridor in block 2 of the MIF. The doors to the rooms were 2.135 m apart. Map-arrow symbols indicate country of origin (Philippines and United Arab Emirates); airplane symbols denote date of arrival in New Zealand. Episodes of simultaneous door-opening between room 277 and rooms 276/278, each lasting 3–5 seconds, are indicated with ↓1 to ↓4. Positive SARS-CoV-2 rRT-PCR test results are indicated by (+); negative rRT-PCR test results are indicated by (–). MIF, managed isolation facility; MQF, managed quarantine facility.

Main Article

Page created: December 22, 2021
Page updated: February 21, 2022
Page reviewed: February 21, 2022
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