Everyone, thanks for your help. The problem lied in the fact that I had empty sub-arrays. I was trying to anticipate the number of unique viruses coming in. Sometimes I guess right, others not. All I needed to do was start with an array X and then push a new array on to X for each name in the database. 
my @dbData;
while (@names = $day->fetchrow_array())
{
     $name = $names[0];
     push my @virus, [@dbData];
}

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In reply to Re: Maximum sub-arrays? by cwalck
in thread Maximum sub-arrays? by cwalck

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