Use of Google Trends to investigate anosmia: power and pitfalls of infodemiology.

The authors did state that they investigated the confounding effect of the ENT-UK statement by analyzing Spain, Italy, and the United Kingdom only prior to March 19, 2020, and found preserved strong correlations. In our previously published infodemiology study,3 we similarly found strong correlations in most countries RSV for anosmia and new COVID-19 cases and deaths. The presumption is that patients with COVID-19 and anosmia will search for this symptom or browse related articles and web pages. [Extracted from the article]