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

杨利霞

Maximum Likelihood Method on The Construction of

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Phylogenetic Tree for Identification the Spreading of

SARS Epidemic

8 f. w. t& o+ s4 Y, N5 G" OThere are several phylogenetic tree construction
methods 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
1 P8 [" |7 W$ E1 c9 ospread of the SARS epidemic in the world using the formation of
% j/ T! B, `! `$ F. ]1 @9 Pphylogenetic trees using the maximum likelihood method. The
0 g: L6 |$ }7 v8 Zoutput obtained was a description of the spread of SARS virus
: g4 G( V- H6 p/ awith the selection of tree candidates after performing a heuristic
' J  s! F6 M; N7 f2 d! W. s. P; Zsearch of the Stepwise Addition method. The result of the research
) s" y* u- g5 {4 E# lshowed that the closest distance to the palm civet is GZ 02/18/03
indicating that the initial spread of the SARS epidemic started
from Guangzhou.

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