PubMed:33127399 JSONTXT 19 Projects

Annnotations TAB TSV DIC JSON TextAE

Id Subject Object Predicate Lexical cue
T1 0-30 Sentence denotes COVID-19 and climatic factors:
T2 31-49 Sentence denotes A global analysis.
T3 50-61 Sentence denotes BACKGROUND:
T4 62-161 Sentence denotes It is unknown if COVID-19 will exhibit seasonal pattern as other diseases e.g., seasonal influenza.
T5 162-369 Sentence denotes Similarly, some environmental factors (e.g., temperature, humidity) have been shown to be associated with transmission of SARS-CoV and MERS-CoV, but global data on their association with COVID-19 are scarce.
T6 370-380 Sentence denotes OBJECTIVE:
T7 381-446 Sentence denotes To examine the association between climatic factors and COVID-19.
T8 447-455 Sentence denotes METHODS:
T9 456-856 Sentence denotes We used multilevel mixed-effects (two-level random-intercepts) negative binomial regression models to examine the association between 7- and 14-day-lagged temperature, humidity (relative and absolute), wind speed and UV index and COVID-19 cases, adjusting for Gross Domestic Products, Global Health Security Index, cloud cover (%), precipitation (mm), sea-level air-pressure (mb), and daytime length.
T10 857-974 Sentence denotes The effects estimates are reported as adjusted rate ratio (aRR) and their corresponding 95% confidence interval (CI).
T11 975-983 Sentence denotes RESULTS:
T12 984-1342 Sentence denotes Data from 206 countries/regions (until April 20, 2020) with ≥100 reported cases showed no association between COVID-19 cases and 7-day-lagged temperature, relative humidity, UV index, and wind speed, after adjusting for potential confounders, but a positive association with 14-day-lagged temperature and a negative association with 14-day-lagged wind speed.
T13 1343-1456 Sentence denotes Compared to an absolute humidity of <5 g/m3, an absolute humidity of 5-10 g/m3 was associated with a 23% (95% CI:
T14 1457-1562 Sentence denotes 6-42%) higher rate of COVID-19 cases, while absolute humidity >10 g/m3 did not have a significant effect.
T15 1563-1620 Sentence denotes These findings were robust in the 14-day-lagged analysis.
T16 1621-1632 Sentence denotes CONCLUSION:
T17 1633-1855 Sentence denotes Our results of higher COVID-19 cases (through April 20) at absolute humidity of 5-10 g/m3 may be suggestive of a 'sweet point' for viral transmission, however only controlled laboratory experiments can decisively prove it.