an><span class="co"># Generate random flu season</span></span></span>
<span class="r-in"><span><span class="va">generate_flu_season</span> <span class="op">&lt;-</span> <span class="kw">function</span><span class="op">(</span><span class="va">start</span> <span class="op">=</span> <span class="fl">1</span>, <span class="va">end</span> <span class="op">=</span> <span class="fl">1000</span><span class="op">)</span> <span class="op">{</span></span></span>
<span class="r-in"><span>  <span class="va">random_incr