The <i id="mwATg"><a href="https://en.wikipedia.org/wiki/Morbidity_and_Mortality_Weekly_Report" id="mwATk" rel="mw:WikiLink" title="Morbidity and Mortality Weekly Report">Morbidity and Mortality Weekly Report</a></i> of the <a href="https://en.wikipedia.org/wiki/Centers_for_Disease_Control_and_Prevention" id="mwATo" rel="mw:WikiLink" title="Centers for Disease Control and Prevention">Centers for Disease Control and Prevention</a> reports that five people in Los Angeles, California, have a rare form of <a href="https://en.wikipedia.org/wiki/Pneumonia" id="mwATs" rel="mw:WikiLink" title="Pneumonia">pneumonia</a> seen only in patients with weakened <a href="https://en.wikipedia.org/wiki/Immune_system" id="mwATw" rel="mw:WikiLink" title="Immune system">immune systems</a>, in what turns out to be the first recognized cases of <a class="mw-redirect" href="https://en.wikipedia.org/wiki/AIDS" id="mwAT0" rel="mw:WikiLink" title="AIDS">AIDS</a>.