Measures against COVID‐19 concerning Summer Indoor Environment in Japan

Hayashi, Motoya; Yanagi, U; Azuma, Kenichi; Kagi, Naoki; Ogata, Masayuki; Morimoto, Shoichi; Hayama, Hirofumi; Mori, Taro; Kikuta, Koki; Tanabe, Shin‐ichi; Kurabuchi, Takashi; Yamada, Hiroyuki; Kobayashi, Kenichi; Kim, Hoon; Kaihara, Noriko

doi:10.1002/2475-8876.12183

Cited by 20 publications

(21 citation statements)

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“…To err on the side of caution, some recommendations can be adapted from hospital rooms to other indoor facilities; these include (Elsaid and Ahmed, 2021) the provision of non-recirculated external air and which is changed at a high air changes per hour (ACH) (REHVA, 2021). The most effective solution is to decentralize ventilation, as this strategy has the benefit of securing the rooms where people do not stay (Guo et al, 2021;Hayashi et al, 2020). Central ventilation systems may be also used and there is no need to modify the existing systems, but a large share of outdoor air and very effective filtration must be provided (Pease et al, 2021).…”

Section: Research On Ventilation Of Rooms During the Covid-19 Pandemi...mentioning

confidence: 99%

“…Adequate ventilation can be provided either by mechanical systems or by opening windows and doors (Asanati et al, 2021;Hayashi et al, 2020). However, the implementation of mechanical ventilation is indicated as the best strategy to ensure adequate air quality as ad hoc control procedures can be further proposed (Asanati et al, 2021;Stabile et al, 2021).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…It occurs in colder climates where additional heating may be needed to offset the benefit of increased air circulation from the outside; therefore, making it a potentially expensive solution (Blocken et al, 2020). Conversely, research carried out in warmer climates has highlighted the need for expensive air conditioning which increases the operating costs of the building when passive airing was being used (Aviv et al, 2021;Hayashi et al, 2020;Park et al, 2021). Additionally, air conditioners do not provide a fresh supply of outside air, but only cool the air from the room (Blocken et al, 2020).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Research has shown that it is necessary to shorten the contact time between two people that do not reside in the same property (Hayashi et al, 2020). It has been estimated that for exposure times up to 3 hours and wearing a mask, with adequate ventilation, the risk of infection is less than 1% (Park et al, 2021).…”

Section: A C C E P T E D Mmentioning

confidence: 99%

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Ventilation Strategy for Proper IAQ in Existing Nurseries Buildings - Lesson Learned from the Research during COVID-19 Pandemic

Ratajczak

2022

Aerosol Air Qual. Res.

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During the COVID-19 pandemic, many recommendations were made in the field of limiting the transmission of the SARS-CoV-2 virus, from which we can learn a lesson for determining ventilation strategies in strategic types of buildings (those whose closure during a pandemic is harmful to the economy, e.g. nurseries). The research was aimed at identifying recommendations in the field of ventilation and proposing a solution that would be applicable in existing buildings intended for the care of small children, and which would ensure the proper quality of the building environment, at the same time with low costs incurred by the owners. The outside air pollution (PM10) and the climate in winter (low air temperature) were also taken into account. A strategy was proposed based on the use of decentralized units, dedicated to single rooms, thanks to which the appropriate amount of air is supplied (per person), the air is cleaned and heated in the heat recovery exchanger. It has been shown that the use of heat recovery ensures that the costs of air heating will be significantly lower than during airing. The proposed solutions require two holes in the external wall with a diameter of 160-200mm (depending on the number of people), which guarantees the technically possible application in existing buildings. The strategy provides suitable conditions for the functioning of nurseries, but can be used in many types of buildings, in cold and temperate climates, where airing of the rooms during winter is not possible, especially in the case of locations where the quality of outdoor air is very poor. The proposed strategy may be applied during a pandemic, but also on a daily basis, because by ensuring the proper quality of indoor air, young children will have healthy and hygienic conditions for development when they are not at home.

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Section: Research On Ventilation Of Rooms During the Covid-19 Pandemi...mentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: A C C E P T E D Mmentioning

confidence: 99%

See 2 more Smart Citations

Ventilation Strategy for Proper IAQ in Existing Nurseries Buildings - Lesson Learned from the Research during COVID-19 Pandemic

Ratajczak

2022

Aerosol Air Qual. Res.

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“…In Japan, the government initially rolled out three main strategies; namely: a) early cluster detection and timely response, b) enhancement of early diagnosis and intensive care for severely affected patients, and c) universal healthcare system strengthening alongside behavioral change of the general population [ 35 ]. Anchored within these major strategies are policy adaptations and requests highlighted in the “ avoidance of the 3C ’s: C losed space, C rowded place and C lose-contact setting ” strategy issued on February 2020, which specifically encourages social distancing, mask donning and indoor space ventilation [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

COVID-19 pandemic modifies temperature and heat-related illness ambulance transport association in Japan: a nationwide observational study

Seposo

Madaniyazi

et al. 2021

Environ Health

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Background During the COVID-19 pandemic, several illnesses were reduced. In Japan, heat-related illnesses were reduced by 22% compared to pre-pandemic period. However, it is uncertain as to what has led to this reduction. Here, we model the association of maximum temperature and heat-related illnesses in the 47 Japanese prefectures. We specifically examined how the exposure and lag associations varied before and during the pandemic. Methods We obtained the summer-specific, daily heat-related illness ambulance transport (HIAT), exposure variable (maximum temperature) and covariate data from relevant data sources. We utilized a stratified (pre-pandemic and pandemic), two-stage approach. In each stratified group, we estimated the 1) prefecture-level association using a quasi-Poisson regression coupled with a distributed lag non-linear model, which was 2) pooled using a random-effects meta-analysis. The difference between pooled pre-pandemic and pandemic associations was examined across the exposure and the lag dimensions. Results A total of 321,655 HIAT cases was recorded in Japan from 2016 to 2020. We found an overall reduction of heat-related risks for HIAT during the pandemic, with a wide range of reduction (10.85 to 57.47%) in the HIAT risk, across exposure levels ranging from 21.69 °C to 36.31 °C. On the contrary, we found an increment in the delayed heat-related risks during the pandemic at Lag 2 (16.33%; 95% CI: 1.00, 33.98%). Conclusion This study provides evidence of the impact of COVID-19, particularly on the possible roles of physical interventions and behavioral changes, in modifying the temperature-health association. These findings would have implications on subsequent policies or heat-related warning strategies in light of ongoing or future pandemics.

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Environmental pollutants and their impact on COVID‐19 spread: Current problem and future resolutions

Patil

Parthasarathy

Matkar³

et al. 2023

Carbon Neutralization

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COVID‐19 is the greatest crucial universal health issue of the century and the extreme challenge that came after the 2nd World War faced by humankind. In 2019, different strains of the coronavirus have emerged drastically, that as severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) which is the causative agent of corona disease. As far as human civilization history, there have been occurrences of severe diseases and outbreaks of various viruses. According to World Health Organization reports, throughout the world, the present outbreak of COVID‐19 has engulfed more than 200 countries affecting 241,471,559 individuals and more than 4,914,092 people lost their lives. SARS‐CoV‐2 outbreak is severely disturbing the worldwide economy at present. The urgent need of recent times is to understand the environmental aspect of COVID‐19 disease. Hence to fulfill this point, the present review article is compiled with a brief discussion about all the minute points of the COVID‐19 pandemic related to the environment: origin and present scenario, the occurrence of SARS‐CoV‐2 in environmental habitats, the effect of COVID‐19 on human health, and environment, environmental factors influencing the transmission and spreading of SARS‐CoV‐2. This review explains micro and macro pollutants in hospital and urban wastewater influencing COVID‐19, detection of SARS‐CoV‐2, current global drug strategies to control replication and spread of SARS‐CoV‐2 from the environment, future approaches, and guidelines to prevent and control upcoming pandemics. The SARS‐CoV‐2 structural details and their effect on humans have been already well presented but the research about environmental factors affecting COVID‐19 could be important points to fight present and future pandemics.

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Measures against COVID‐19 concerning Summer Indoor Environment in Japan

Cited by 20 publications

References 50 publications

Ventilation Strategy for Proper IAQ in Existing Nurseries Buildings - Lesson Learned from the Research during COVID-19 Pandemic

Ventilation Strategy for Proper IAQ in Existing Nurseries Buildings - Lesson Learned from the Research during COVID-19 Pandemic

COVID-19 pandemic modifies temperature and heat-related illness ambulance transport association in Japan: a nationwide observational study

Environmental pollutants and their impact on COVID‐19 spread: Current problem and future resolutions

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