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- W3035843944 abstract "Studies have suggested a possible association of coronavirus 2019 (COVID-19) with conjunctivitis, chemosis, and other ocular symptoms such as red or sore eyes.1Wu P. Duan F. Luo C. et al.Characteristics of ocular findings of patients with coronavirus disease 2019 (COVID-19) in Hubei Province, China.JAMA Ophthalmol. 2020; 138: 575-578Crossref PubMed Scopus (847) Google Scholar, 2Hong N. Yu W. Xia J. et al.Evaluation of ocular symptoms and tropism of SARS-CoV-2 in patients confirmed with COVID-19.Acta Ophthalmol. 2020; Apr 26; (Online ahead of print)https://doi.org/10.1111/aos.14445Crossref PubMed Scopus (132) Google Scholar, 3Daruich A. Martin D. Bremond-Gignac D. Ocular manifestation as first sign of coronavirus disease 2019 (COVID-19): interest of telemedicine during the pandemic context.J Fr Ophtalmol. 2020; 43: 389-391Crossref PubMed Scopus (63) Google Scholar, 4Colavita F. Lapa D. Carletti F. et al.SARS-CoV-2 isolation from ocular secretions of a patient with COVID-19 in Italy with prolonged viral RNA detection.Ann Intern Med. 2020; : M20-M1176Google Scholar, 5Zhou Y. Duan C. Zeng Y. et al.Ocular findings and proportion with conjunctival SARS-COV-2 in COVID-19 patients.Ophthalmology. 2020; 127: 982-983Abstract Full Text Full Text PDF PubMed Scopus (144) Google Scholar The estimated proportion of those with ocular symptoms, some consistent with conjunctivitis, ranges widely, from less than 1% (Centers for Disease Control and Prevention Coronavirus 2019-Associated Hospitalization Surveillance Network) to more than 30%,1Wu P. Duan F. Luo C. et al.Characteristics of ocular findings of patients with coronavirus disease 2019 (COVID-19) in Hubei Province, China.JAMA Ophthalmol. 2020; 138: 575-578Crossref PubMed Scopus (847) Google Scholar,5Zhou Y. Duan C. Zeng Y. et al.Ocular findings and proportion with conjunctival SARS-COV-2 in COVID-19 patients.Ophthalmology. 2020; 127: 982-983Abstract Full Text Full Text PDF PubMed Scopus (144) Google Scholar suggesting that conjunctivitis could be a disease feature and potentially a useful diagnostic sign. More precise characterization of clinical eye presentations associated with COVID-19 infection or social distancing measures may be hindered by a marked reduction in eye care clinical visit data as a result of sheltering in place. Moreover, observations of other life-threatening conditions take precedence in clinical documentation. Online search and social media data can reflect community seasonal clinical eye disease patterns and conjunctivitis epidemics.6Deiner M.S. McLeod S.D. Wong J. et al.Google searches and detection of conjunctivitis epidemics worldwide.Ophthalmology. 2019; 126: 1219-1229Abstract Full Text Full Text PDF PubMed Scopus (27) Google Scholar We used Google Trends data, readily available outside of a clinic environment, to investigate whether public interest in search terms related to eye conditions might suggest a surge in COVID-19–related symptoms during the COVID-19 shelter-in-place months. We assessed 18 search terms, including for proposed ocular1Wu P. Duan F. Luo C. et al.Characteristics of ocular findings of patients with coronavirus disease 2019 (COVID-19) in Hubei Province, China.JAMA Ophthalmol. 2020; 138: 575-578Crossref PubMed Scopus (847) Google Scholar, 2Hong N. Yu W. Xia J. et al.Evaluation of ocular symptoms and tropism of SARS-CoV-2 in patients confirmed with COVID-19.Acta Ophthalmol. 2020; Apr 26; (Online ahead of print)https://doi.org/10.1111/aos.14445Crossref PubMed Scopus (132) Google Scholar, 3Daruich A. Martin D. Bremond-Gignac D. Ocular manifestation as first sign of coronavirus disease 2019 (COVID-19): interest of telemedicine during the pandemic context.J Fr Ophtalmol. 2020; 43: 389-391Crossref PubMed Scopus (63) Google Scholar, 4Colavita F. Lapa D. Carletti F. et al.SARS-CoV-2 isolation from ocular secretions of a patient with COVID-19 in Italy with prolonged viral RNA detection.Ann Intern Med. 2020; : M20-M1176Google Scholar, 5Zhou Y. Duan C. Zeng Y. et al.Ocular findings and proportion with conjunctival SARS-COV-2 in COVID-19 patients.Ophthalmology. 2020; 127: 982-983Abstract Full Text Full Text PDF PubMed Scopus (144) Google Scholar and known nonocular COVID-19 symptoms. Terms for allergy symptoms were included as well, in part as positive control measures. In consultation with native language speakers, similar terms in French, Spanish, and Italian also were included. Daily relative search frequency volume was obtained using the Google Timelines for Health API for the weeks of April 26, 2015, through April 24, 2020, using methods as described previously.6Deiner M.S. McLeod S.D. Wong J. et al.Google searches and detection of conjunctivitis epidemics worldwide.Ophthalmology. 2019; 126: 1219-1229Abstract Full Text Full Text PDF PubMed Scopus (27) Google Scholar Table S1 (available at www.aaojournal.org) indicates search terms included from each language representing sore eyes, burning eyes, red eyes, conjunctivitis, allergy, and nonocular COVID-19. To reduce bias, before statistical analysis, actual search terms and languages in the dataset were numerically encoded (masked). We then fit linear regression models contrasting search interest in each month of 2020 with that month in prior years, yielding 2-sided P values (α = 0.05). Holm-Bonferroni correction was applied within each monthly analysis. For each month in 2020, the mean monthly search interest for each selected masked search term was compared with the mean in the same months of the prior 4 years. Search terms and languages then were unencoded (unmasked). In Figure 1, mean search interest (y-axis) for eye-related, allergy-related, and nonocular COVID-19 terms are plotted for weeks 1 through 27 (x-axis) of each year. In Table S1 (available at www.aaojournal.org), P values and change ratios indicate, for each term-per-month combination, if searches in 2020 were significantly higher or lower than in the same months in 2015 through 2019. Because our French language speakers had occasionally suggested multiple French translation term options, we also conducted post hoc a sensitivity comparison between French terms that had been assessed originally and alternate suggested terms that had not been included in the original analysis. This study was approved by University of California, San Francisco, Institutional Review Board (approval no. 14-14743) and adhered to the tenets of the Declaration of Helsinki. Figure 1 and Table S1 (available at www.aaojournal.org) show that 2020 searches for terms representing conjunctivitis were significantly more frequent than for prior years in February through April in Italian (173%), French (48%), and Spanish (22%). In English, 2020 searches for conjunctivitis and pink eye increased slightly above the frequency for prior years in January and February. However, searches for the same English terms decreased significantly in March and April 2020 compared with prior years. This was despite significantly elevated 2020 English allergy-related searches. In addition, 2020 searches representing burning eyes were significantly higher in March through April for English (67%) and Italian (101%) and in March for French (56%). Searches in 2020 representing sore eyes were higher than prior years in January and in March through April for English and in March through April for Spanish. In English, searches representing red eyes also were higher in 2020 compared with prior years in February through April. Several allergy-related searches were higher in 2020 than in prior years in all languages including in January, and especially in March through April for English and French. Most nonocular COVID-19 terms were searched significantly more in spring 2020 (often well above 1000%) compared with prior years, some starting in January. We also observed that P values varied, but only slightly, between the optional French translations that we examined. For instance, use of mal aux yeux lead to a slightly smaller adjusted P value (0.71) in March compared with that for douleur des yeux (1.0), and use of yeux qui piquent instead of yeux piquent yielded P < 0.001 in both cases. Increased search interest during the pandemic compared with the same months in prior years for terms representing conjunctivitis (especially in Italian) could suggest an association with COVID-19 infection, as has been suggested from isolated case reports on COVID-19 patients.1Wu P. Duan F. Luo C. et al.Characteristics of ocular findings of patients with coronavirus disease 2019 (COVID-19) in Hubei Province, China.JAMA Ophthalmol. 2020; 138: 575-578Crossref PubMed Scopus (847) Google Scholar, 2Hong N. Yu W. Xia J. et al.Evaluation of ocular symptoms and tropism of SARS-CoV-2 in patients confirmed with COVID-19.Acta Ophthalmol. 2020; Apr 26; (Online ahead of print)https://doi.org/10.1111/aos.14445Crossref PubMed Scopus (132) Google Scholar, 3Daruich A. Martin D. Bremond-Gignac D. Ocular manifestation as first sign of coronavirus disease 2019 (COVID-19): interest of telemedicine during the pandemic context.J Fr Ophtalmol. 2020; 43: 389-391Crossref PubMed Scopus (63) Google Scholar, 4Colavita F. Lapa D. Carletti F. et al.SARS-CoV-2 isolation from ocular secretions of a patient with COVID-19 in Italy with prolonged viral RNA detection.Ann Intern Med. 2020; : M20-M1176Google Scholar In English, despite a small early spring increase, conjunctivitis and pink eye searches decreased significantly in the later spring months of 2020 compared with prior years. This could suggest that although COVID-19 may be associated with conjunctivitis, any such English search interest was offset by a larger reduction in school-related conjunctivitis. That searches for conjunctivitis and pink eye (but no other eye symptoms) in English were significantly lower in March and April 2020 than in prior years supports the possibility that school closures and social distancing may have reduced the incidence of contagious conjunctivitis not related to COVID-19. This supports the public health policy of distancing for controlling conjunctivitis outbreaks.6Deiner M.S. McLeod S.D. Wong J. et al.Google searches and detection of conjunctivitis epidemics worldwide.Ophthalmology. 2019; 126: 1219-1229Abstract Full Text Full Text PDF PubMed Scopus (27) Google Scholar For terms representing sore, red, and burning eyes (especially in English and Spanish), elevated search frequency in spring 2020 compared with prior years aligns with reports associating these symptoms with COVID-19 infection in some patients.2Hong N. Yu W. Xia J. et al.Evaluation of ocular symptoms and tropism of SARS-CoV-2 in patients confirmed with COVID-19.Acta Ophthalmol. 2020; Apr 26; (Online ahead of print)https://doi.org/10.1111/aos.14445Crossref PubMed Scopus (132) Google Scholar,3Daruich A. Martin D. Bremond-Gignac D. Ocular manifestation as first sign of coronavirus disease 2019 (COVID-19): interest of telemedicine during the pandemic context.J Fr Ophtalmol. 2020; 43: 389-391Crossref PubMed Scopus (63) Google Scholar,7Verri D. Coronavirus in Italy: Alessandro Favalli describes ‘fever, headache, eyes burning.’ March 19, 2020. https://www.bbc.com/sport/football/51961429. Accessed 19.03.20.Google Scholar Recent reports have suggested COVID-19 spread in the United States and Europe as early as December 2019. Our finding that search interest for allergy-related terms was elevated early in spring 2020 compared with prior years could be the result of the similarity between COVID-19 symptoms and allergy symptoms. Alternatively, this could signify an aggressive early 2020 allergy season combined later with excessive screen time as a result of working from home. Our results suggest a relationship between the COVID-19 pandemic and internet search patterns for some ocular surface conditions, varying between languages. This study has several limitations. Additional, better non-English translations may exist for some of the terms studied. Although some languages (Italian and French) can help to identify a region, overlap exists between regions and languages spoken. Because some reports suggest that distinct strains of COVID-19 could affect regions differently, future studies using search data from countries or smaller geographic regions could investigate whether search interest in ocular conditions related to COVID-19 varies regionally. Although we observed a significant increase in conjunctivitis searches in Italian, conjunctivitis searches did not surge consistently across all COVID-19–affected languages or more than other ocular (red, sore, burning eyes) or nonocular COVID-19 conditions, diminishing the likelihood that conjunctivitis is a global cardinal finding of COVID-19 infection. Increased search interest also could be triggered by news stories or case reports about eye conditions. However, because conjunctivitis and pink eye searches decreased in English and searches for more subjective ocular symptom terms increased (terms less likely to have appeared in news or publications), this explanation is less likely. As ambulatory visits and telemedicine increase capacity, comparing searches with clinical and epidemiologic data will help to assess alternate causes of search pattern changes and will help to support or refute our findings. Download .pdf (.17 MB) Help with pdf files Table S1" @default.
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- W3035843944 date "2021-01-01" @default.
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- W3035843944 title "Ocular Signs of COVID-19 Suggested by Internet Search Term Patterns Worldwide" @default.
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