A new model of population dynamics of HIV-1 in vivo
Date
2009-09-08T09:00:44Z
Authors
Cawse, Kerry-Anne
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Abstract
Using a simple model of HIV-1 viral load and infected CD4+ count, with easily measurable
coe cients, valid on time scales of approximately a month, we nd that HIV-1 is understood
by sequential outburst of viral populations with delay between populations. AIDS is
characterised by shorter delays between viral populations and HAART is characterised by
longer delays between viral populations, as evidenced in observed viral blips. Infected CD4+
dynamics is understood by sequential outburst with overlap of CD4+ populations. We argue
that viral load and CD4+ counts must be in phase and present a model in di erential
equations that supports this conclusion and is consistent with decay rates discovered by the
outburst model.