General information
Report type: immediate notification
Reason for notification: recurrence of an eradicated disease
Started on: 7 Jul 2022
Confirmed on: 22 Jul 2022
Reported on: 28 Jul 2022
Last occurrence: 22 Aug 2018
Disease: Influenza A viruses of high pathogenicity (Infction with)
(non-poultry including wild birds) (2017-)
Causal agent: highly pathogenic avian influenza virus
Genotype/serotype/subtype: H5N1
Diagnostic details: laboratory, clinical
Animal type: terrestrial
Disease category: WOAH-listed
This event pertains to the whole country.

Summary of outbreaks
New outbreak
Outbreak locations: Qinghai, Shi nai hai township
Start date: 29 Jul 2022
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated / Morbidity
(calculated) / Mortality (calculated)
Brown-Headed Gull (_Larus brunicephalus_): Laridae-Charadriiformes / -
/ 273 / 273 / 0 / 0 / 0 / - / -

Epidemiology
Source of event or origin of infection: unknown or inconclusive
Event status: on-going

Control measures at event level
Wild control measures applied: disinfection, official disposal of
carcasses, by-products and waste, surveillance within the restricted
zone

Diagnostic test results
Test name / Category / Test type / Laboratory / Species sampled /
Outbreaks / Tested from / Tested until
Real-time reverse transcription polymerase chain reaction (rRT-PCR) /
Nucleic acid detection / Laboratory test / National Avian Influenza
Laboratory, Harbin Veterinary Research Institute WOAH Reference
Laboratory / Brown-Headed Gull / 1 /7 Jul 2022 / 22 Jul 2022
Gene sequencing / Genotyping / Laboratory test / National Avian
Influenza Laboratory, Harbin Veterinary Research Institute WOAH
Reference Laboratory / Brown-Headed Gull / 1 / 9 Jul 2022 / 22 Jul 2022