Maximum Likelihood Method on The Construction of Phylogenetic Tree for Ident...

杨利霞

Maximum Likelihood Method on The Construction of

Phylogenetic Tree for Identification the Spreading of

SARS Epidemic

- [8 @* f  y; q; X3 [& I$ p9 g2 pThere are several phylogenetic tree construction
; M1 h' r1 Y6 n  Rmethods that can be used to illustrate the spread of disease
epidemics. One of the methods used is probability-based
maximum likelihood. This paper explains how to identify the
, z% S1 i- E+ L1 a3 ispread of the SARS epidemic in the world using the formation of
phylogenetic trees using the maximum likelihood method. The
, t/ |1 ^2 H$ W$ I5 m. ~4 L, D" U' eoutput obtained was a description of the spread of SARS virus
with the selection of tree candidates after performing a heuristic
* _& \6 @$ Q% V, [5 J- ksearch of the Stepwise Addition method. The result of the research
showed that the closest distance to the palm civet is GZ 02/18/03
# @8 T/ Y; ]  W' ]% [" R2 b7 a& qindicating that the initial spread of the SARS epidemic started
from Guangzhou.
' I  \! {* p7 K6 ?3 t


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