Risk factor analysis results when comparing sARI cases and non-sARI among infants under 6 months.

<p>Co-variates were chosen based on initial univariate analyses (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0148421#pone.0148421.s007" target="_blank">S4 Table</a>). Estimates in bold indicate statistically significant co-variates.</p

The weekly number of virus positives detected from ILI and sARI cases during the 2013/14 (left) and 2014/15 (right) seasons, for pregnant women (a) and infants under 6 months (b).

<p>The bars show the number of positive cases for influenza A (red), influenza B (blue) and RSV (green). The black lines indicate periods of limited point-of-care test kit supply, thus testing was compromised in those weeks. The overall testing rate for ILI and sARI cases are 94.8% and 100%, respectively, for pregnant women and 77.6% and 30.6%, respectively, for infants under 6 months.</p

Total positive case numbers of influenza A, influenza B and RSV and also those hospitalized for sARI, stratified by age groups and for the overall cohort.

<p>Total positive case numbers of influenza A, influenza B and RSV and also those hospitalized for sARI, stratified by age groups and for the overall cohort.</p

Risk factor analysis results when comparing influenza A positive cases and non-ILI among pregnant women.

<p>Co-variates were chosen based on initial univariate analyses. Estimates in bold indicate statistically significant co-variates.</p

Incidence rates (IRs) of ILI and sARI cases detected for pregnant women, stratified by trimester stage and for the overall cohort.

<p>Incidence rates (IRs) of ILI and sARI cases detected for pregnant women, stratified by trimester stage and for the overall cohort.</p

The weekly number of influenza-like illness (ILI) [orange] and severe acute respiratory infections (sARI) [purple] cases during the 2013/14 (left) and 2014/15 (right) seasons, for pregnant women (a) and infants under 6 months (b).

<p>The black lines indicate periods of limited point-of-care test kit supply, thus testing was compromised in those weeks.</p

Risk factor analysis results when comparing ILI cases and non-ILI among pregnant women.

<p>Co-variates were chosen based on initial univariate analyses (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0148421#pone.0148421.s006" target="_blank">S3 Table</a>). Estimates in bold indicate statistically significant co-variates.</p

Incidence rates (IRs) of ILI and sARI cases for infant under 6 months, stratified by age groups and for the overall cohort.

<p>Incidence rates (IRs) of ILI and sARI cases for infant under 6 months, stratified by age groups and for the overall cohort.</p

Incidence rates (IRs) of influenza A, influenza B and RSV detected for pregnant women, stratified by trimester stage and for the overall cohort.

<p>Incidence rates (IRs) of influenza A, influenza B and RSV detected for pregnant women, stratified by trimester stage and for the overall cohort.</p

Secondary attack rates and relative risk of ILI by age and gender of household contacts.

<p>Abbreviations: ILI, influenza-like illness; SAR, secondary attack rate; CI, confidence interval; NA, not applicable.</p