Plus/minus symbols indicate subregions where the ratio was significantly below/above expected value (based on Fisher’s exact tests). Dashed areas are subregions with no or inadequate numbers of positive tests.</p
<p>(A) Definition of three influenza epidemiological regions based on hierarchical clustering (color...
<p>The sentinel cities that report mortality due to P&I used in the Centers for Disease Control and ...
<p>Analysis was limited to countries providing ≥30 viruses for ≥3 yrs. Different colors represent di...
Percent-positivity rates during the baseline season for influenza A and B during 2016–2017 and 2017–...
7-day moving average of positive test results for influenza A and B in each subregion. The y-axis in...
<p>(A) density plot showing the specific humidity in absolute terms (x-axis) and relative terms (y-a...
Map of the spatial distribution of influenza A (H1N1) cases per 1,000 inhabitants with climatic and ...
<p>The overall % positivity of types and subtypes is shown for each city. The left axis shows the pe...
<p>Red symbols illustrate the comparison between IMS-ILI (y-axis) and CDC laboratory surveillance (x...
<p>measured by the proportion of influenza B among all influenza positive isolates each season. Medi...
<p>Bold provinces are where the seasonality test result is found to be positive. : Denote the provin...
<p>Plots represent estimates of seasonal parameters as a function of latitude for influenza A (left ...
<p>The site symbols indicate whether a location has annual or semi-annual influenza activity, and sy...
<p><b>(A)</b> Maps show the proportion of laboratory-confirmed cases of influenza A compared to infl...
<p>Asymptomatic infection ratio distribution of the different influenza virus subtypes.</p
<p>(A) Definition of three influenza epidemiological regions based on hierarchical clustering (color...
<p>The sentinel cities that report mortality due to P&I used in the Centers for Disease Control and ...
<p>Analysis was limited to countries providing ≥30 viruses for ≥3 yrs. Different colors represent di...
Percent-positivity rates during the baseline season for influenza A and B during 2016–2017 and 2017–...
7-day moving average of positive test results for influenza A and B in each subregion. The y-axis in...
<p>(A) density plot showing the specific humidity in absolute terms (x-axis) and relative terms (y-a...
Map of the spatial distribution of influenza A (H1N1) cases per 1,000 inhabitants with climatic and ...
<p>The overall % positivity of types and subtypes is shown for each city. The left axis shows the pe...
<p>Red symbols illustrate the comparison between IMS-ILI (y-axis) and CDC laboratory surveillance (x...
<p>measured by the proportion of influenza B among all influenza positive isolates each season. Medi...
<p>Bold provinces are where the seasonality test result is found to be positive. : Denote the provin...
<p>Plots represent estimates of seasonal parameters as a function of latitude for influenza A (left ...
<p>The site symbols indicate whether a location has annual or semi-annual influenza activity, and sy...
<p><b>(A)</b> Maps show the proportion of laboratory-confirmed cases of influenza A compared to infl...
<p>Asymptomatic infection ratio distribution of the different influenza virus subtypes.</p
<p>(A) Definition of three influenza epidemiological regions based on hierarchical clustering (color...
<p>The sentinel cities that report mortality due to P&I used in the Centers for Disease Control and ...
<p>Analysis was limited to countries providing ≥30 viruses for ≥3 yrs. Different colors represent di...