Rabbit haemorrhagic disease,
Mexico

Information received on 14/07/2020 from Dr. Gay Gutiérrez Juan, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA), Secretaría de Agricultura y Desarrollo Rural (SADER), Ciudad de Mexico, Mexico

Summary

Report type	Follow-up report No. 10
Date of start of the event	03/04/2020
Date of confirmation of the event	08/04/2020
Report date	14/07/2020
Date submitted to OIE	14/07/2020
Reason for notification	Recurrence of a listed disease
Date of previous occurrence	1991
Manifestation of disease	Clinical disease
Causal agent	Rabbit haemorrhagic disease virus
Serotype	RHDV2
Nature of diagnosis	Clinical, Laboratory (advanced)
This event pertains to	a defined zone within the country
Related reports	Immediate notification (09/04/2020) Follow-up report No. 1 (22/04/2020) Follow-up report No. 2 (04/05/2020) Follow-up report No. 3 (15/05/2020) Follow-up report No. 4 (25/05/2020) Follow-up report No. 5 (29/05/2020) Follow-up report No. 6 (09/06/2020) Follow-up report No. 7 (17/06/2020) Follow-up report No. 8 (24/06/2020) Follow-up report No. 9 (01/07/2020) Follow-up report No. 10 (14/07/2020) Follow-up report No. 11 (22/07/2020) Follow-up report No. 12 (29/07/2020) Follow-up report No. 13 (04/08/2020) Follow-up report No. 14 (18/08/2020) Follow-up report No. 15 (26/08/2020) Follow-up report No. 16 (18/09/2020) Follow-up report No. 17 (25/09/2020) Follow-up report No. 18 (05/10/2020) Follow-up report No. 19 (14/10/2020) Follow-up report No. 20 (28/10/2020) Follow-up report No. 21 (17/11/2020) Follow-up report No. 22 (09/12/2020) Follow-up report No. 23 (15/01/2021) Follow-up report No. 24 (20/01/2021)

New outbreaks (2)

Outbreak 1

Ensenada, Baja California

Date of start of the outbreak

02/07/2020

Outbreak status

Resolved (04/07/2020)

Epidemiological unit

Backyard

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Rabbits	1	1	1	0	0

Affected population

A backyard with 1 rabbit, this is a pet animal, detected by notification due to sudden mortality of the animal. Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.

Outbreak 2

Mexicali, Baja California

Date of start of the outbreak

03/07/2020

Outbreak status

Resolved (04/07/2020)

Epidemiological unit

Backyard

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Rabbits	6	1	1	5	0

Affected population

A backyard with 6 rabbits, these are pet animals, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (bloody and foamy nasal discharge). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.

Summary of outbreaks

Total outbreaks: 2

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Rabbits	7	2	2	5	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Rabbits	28.57%	28.57%	100.00%	100.00%

*Removed from the susceptible population through death, destruction and/or slaughter

Epidemiology

Source of the outbreak(s) or origin of infection

Unknown or inconclusive

Epidemiological comments

Following epidemiological tracing and increased notification, affected backyards were identified: two in Baja California. The backyards have been depopulated and cleaning and desinfection are on-going. Active surveillance continues in these States for new cases. It was recommended that producers in the area immediately inform official veterinary personnel of the presence of typical signs of rabbit haemorraghic disease or of any wild animals found dead in the area, as well as avoid movements of rabbits.

Control measures

Measures applied	Surveillance within containment and/or protection zone Quarantine Official disposal of carcasses, by-products and waste Stamping out Disinfection Vaccination prohibited No treatment of affected animals
Measures to be applied	Surveillance outside containment and/or protection zone

Future Reporting

The event is continuing. Weekly follow-up reports will be submitted.

Map of outbreak locations