International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2024
Diagnostic utility of pharyngeal follicular structures in COVID-19: A large-scale cross-sectional study.
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Takahashi Hidenori, Morikawa Miwa, Satake Yugo, Nagamatsu Hiroki, Hirose Ryutaro, Yamada Yuka, Toba Naoya, Toyama-Kousaka Mio, Ota Shinichiro, Shinoda Masahiro, Mineshita Masamichi, Shinkai Masaharu
Аннотация
OBJECTIVES: Pharyngeal follicles similar to those seen in influenza have been observed in patients with coronavirus disease 2019 (COVID-19), suggesting their potential as early-stage diagnostic markers. In this study, we examined the diagnostic potential of pharyngeal follicles for COVID-19, particularly the Omicron variant and its subtypes, to obtain basic data for AI-based diagnostic imaging tools.
METHODS: A cross-sectional study was conducted from July 21, 2022, to March 31, 2023, at the Tokyo Shinagawa Hospital's fever clinic. Participants aged ≥15 years who underwent real-time polymerase chain reaction testing for COVID-19 and pharyngeal examinations were included. Demographic details, symptom onset, throat pain, and vaccination status were also recorded. Pharyngeal structures were categorized into four groups: follicles, buds, mixed, or absent.
RESULTS: Of the 1223 participants, 829 (67.8%) tested positive for COVID-19. Among those who tested positive, 73.6% (95% CI: 70.6%-76.6%) had follicular structures, compared to 52.8% (95% CI: 47.9%-57.7%) of those who tested negative (P = 1.0 × 10-12). Overall, 818 participants exhibited follicular structures (439 with follicles, 281 with buds, and 98 with mixed structures), while 405 lacked any follicular structures. Regression analysis identified throat pain and follicular structures as significant COVID-19 predictors (95% confidence intervals: 2.49-4.85 and 1.43-2.59, respectively). Mixed follicles were identified as a potentially characteristic feature of COVID-19.
CONCLUSION: Pharyngeal follicular structures demonstrated high sensitivity for early COVID-19 diagnosis.
METHODS: A cross-sectional study was conducted from July 21, 2022, to March 31, 2023, at the Tokyo Shinagawa Hospital's fever clinic. Participants aged ≥15 years who underwent real-time polymerase chain reaction testing for COVID-19 and pharyngeal examinations were included. Demographic details, symptom onset, throat pain, and vaccination status were also recorded. Pharyngeal structures were categorized into four groups: follicles, buds, mixed, or absent.
RESULTS: Of the 1223 participants, 829 (67.8%) tested positive for COVID-19. Among those who tested positive, 73.6% (95% CI: 70.6%-76.6%) had follicular structures, compared to 52.8% (95% CI: 47.9%-57.7%) of those who tested negative (P = 1.0 × 10-12). Overall, 818 participants exhibited follicular structures (439 with follicles, 281 with buds, and 98 with mixed structures), while 405 lacked any follicular structures. Regression analysis identified throat pain and follicular structures as significant COVID-19 predictors (95% confidence intervals: 2.49-4.85 and 1.43-2.59, respectively). Mixed follicles were identified as a potentially characteristic feature of COVID-19.
CONCLUSION: Pharyngeal follicular structures demonstrated high sensitivity for early COVID-19 diagnosis.