Timing Nirsevimab may be given in most of the continental U S from Oct Mar Because timing of the onset peak and decline of RSV activity may vary administration schedules may be adjusted based on local RSV activity nbsp Tropical climates including southern

<b>Timing.</b> Nirsevimab may be given in most of the continental U.S. from <b>Oct.-Mar.</b> Because timing of the onset, peak, and decline of RSV activity may vary, administration schedules may be adjusted based on local RSV activity.<br>
&nbsp;◦ <b>Tropical climates</b> (including southern Florida, Hawaii, Guam, Puerto Rico, U.S. Virgin Islands, and U.S.-affiliated Pacific Islands) may have RSV circulation patterns that differ from most of the continental U.S. or are unpredictable. Consult state, local, or territorial guidance on timing of nirsevimab administration.<br>
&nbsp;◦ In <b>Alaska</b>, RSV circulation patterns are less predictable, and the duration of RSV season is often longer than the national average. Consult state or local guidance on timing of nirsevimab administration.