<div class="alert alert-info">
<p>
<?php
$numcomms = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->comments WHERE comment_approved = '1'");
if (0 < $numcomms) $numcomms = number_format($numcomms); echo "Hay <span>".$numcomms."</span> comentarios en total en "; bloginfo('name');
?>
</p>
</div>