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

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There are several phylogenetic tree construction
( C- J" l: ]) o! D. j9 Ymethods that can be used to illustrate the spread of disease
5 r% N) Y$ f5 ?% p1 gepidemics. One of the methods used is probability-based
maximum likelihood. This paper explains how to identify the
spread of the SARS epidemic in the world using the formation of
" q; T# ~- }, M2 m+ bphylogenetic trees using the maximum likelihood method. The
0 H2 B4 e$ _! ?& Uoutput obtained was a description of the spread of SARS virus
with the selection of tree candidates after performing a heuristic
/ o. S9 I% p  ~7 e% {+ msearch of the Stepwise Addition method. The result of the research
showed that the closest distance to the palm civet is GZ 02/18/03
5 I8 H3 l9 T+ zindicating that the initial spread of the SARS epidemic started
from Guangzhou.
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