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A Chinese doctor has warned the novel coronaviruscan attack a person's central nervous system. It isthe first case that proves the novel coronavirus candamage people's central nervous system, mediareported Wednesday.
Liu Jingyuan, dean of the ICU department of theBeijing Ditan Hospital and attending doctor of the56-year-old patient, warned that doctors shouldcheck cerebrospinal fluid if patients suddenly slip inand out of consciousness, in order to lower the fatality rate of critical patients. The patientrecovered and was discharged from hospital on February 25.
The patient was hospitalized one month earlier for respiratory failure. Doctors conducted genesequencing on his cerebrospinal fluid as he showed symptoms of neurological disorder liketwitching on the face after days of treatments.
China issued the seventh treatment guide for COVID-19 on Tuesday that includes results ofautopsies, which clarifies that the novel coronavirus could damage various organs includingbrain tissue.
The novel coronavirus has evolved into two major subtypes, a Chinese study has revealed.
The study, titled On the origin and continuing evolution of SARS-CoV-2, was published on theNational Science Review of the Chinese Academy of Sciences (CAS) on Tuesday (March 3).
3月3日，中国科学院主办的《国家科学评论》(National Science Review)发表题为《关于SARS-CoV-2的起源和持续进化》的论文。
By analyzing the genome-wide molecular evolution of 103 novel coronavirus samples,scientists found 101 samples that can be categorized into S-cov and L-cov based on 149mutation spots on virus strains.
The paper states that S type, accounting for 30 percent, is closer to the bat-related coronavirusand is relatively older, while the L type was more prevalent in the early stages of the outbreakin Wuhan.
Human intervention may have placed more severe selective pressure on the L type, whichmight be more aggressive and spread more quickly than the S type.
However, the authors highlighted the fact the data examined in the study is very limited. HowL type strains evolved from S type, as well as how these mutations would affect thetransmission and pathogenesis of the virus, are still unknown.
Scientists also found most patients caught either the L or S type of novel coronavirus strain.But there might be exceptions to the rule that should be followed with further research. Forexample, the study said a 63-year-old female patient in Chicago had likely contracted both Land S types of novel coronavirus strains when she traveled in Wuhan and returned to the UnitedStates on Jan 13.