 data for a complete previous season to make predictions for the current season.
Observations will be incidence if <code>population</code> and <code>incidence</code> are available in the <code>tsd</code> object.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">seasonal_burden_levels</span><span class="op">(</span></span>
<span>  <spa