The OIE reported last March 9, 2012 a new notification, updating the situation in France against the infection by the Schmallenberg virus (SBV). Summing these data, 1,204 farms are affected by the SBV in Europe (Figure 1). As shown in the map, outbreaks have been an enormous expansion in France, reaching regions that are only 350 km from the border with Spain.
Fig. 1: Distribution of the infection by the Schmallenberg virus in Europe
Source: self-elaboration from data from the OIE-WAHID database up to March 9, 2012.
Apart from France, Germany and the Netherlands are the other two countries with the highest rates of infection with this virus. In all three, the sheep industry is worse off. In fact, among the three countries there have been 948 outbreaks in sheep (nearly 80% of total). With regard to cattle, these farms are not suffering so many malformations. In addition, the diagnosis of many samples from malformed fetuses (mostly done by RT-PCR) is testing negative. Therefore, the Dutch Central Veterinary Institute (CVI) has conducted a serological survey of 1,123 samples collected from dairy cows between November 2011 and January 2012 in order to ascertain the SBV status of the herd.
The study has resulted in an overall prevalence of 70%, on some farms reaching almost 100%. Firstly, there is a need for sensitive and affordable serological techniques for establishing the actual distribution pattern of this virus in the European Union. In addition, this shows that the virus has been actively circulating during the months of higher activity of the vector. In fact, a Belgian study conducted in pools of insects captured in late 2011 found the VSB in at least two vectors: Culicoides obsoletus and C. dewulfi. This shows that at least two species of midges are involved in the VSB transmission. Although more studies are necessary, important steps seem to be taken to unravel not only the past movement of the virus but also the present activity in order to ultimately know the real impact that this infection may lead.
Víctor Rodríguez Prieto & José Manuel Sánchez-Vizcaíno
ProMED mail. Schmallenberg virus - Europe (25): Netherlands, serosurvey. File Number: 20120309.1065831.
ProMED mail. Schmallenberg virus - Europe (26): vector, morphology. File Number: 20120311.1066949
- Oral communication, Dr. Sánchez-Vizcaíno "New Advances in the diagnosis of viral diseases in dolphins".
- Oral communication, Consuelo Rubio "Unusual striped dolphin mass mortality episode related to cetacean morbillivirus in the Spanish Mediterranean Sea".
- Oral communication, Mar Melero "Elevated presence and variability of Herpesvirus in cetaceans stranded during 2010 and 2011 in the Region of Valencia".
- Póster, Jose Luis Crespo "Use of radiographic parameters for age estimation in stranded cetaceans".
During this month of February Professor Sanchez-Vizcaino will give two lectures on "Schmallenberg virus".
On 22 February in Seville in the Official College of Veterinarians of Seville, entitled "Virus Schmallenger: Review of the known aspects of this disease. Potential risk of entry into our country." Program and poster (Spanish text)
23rd in Madrid organized by the College of Veterinarians of Madrid. More info
The Animal Health Scientific Community in particular those that work in African Swine Fever are living sad days due to the irreparable loss of our dear friend and colleague Cristiana Patta.
On February 17th died prematurely in Sassari, Sardinia, our dear Cristiana after a long battle against cancer. All who were fortunate to know and work with her can never forget. It was a great pleasure to work with her. Its elegant and great sympathy leadership made the long and sometimes difficult meetings were productive while very encouraging and positive.
Cristiana was one of the researchers most vital in the fight against African Swine Fever, a disease to which she devoted most of his professional life, first as a specialist in diagnosis and later as head of the control and eradication program in Sardinia. A happy and lively woman, tireless and tenacious, with great qualities for communication and human relations. We lost a great professional and a dear and close friend.
In this sad time we must remember specially and send all our love to her partner Giuseppe, to her mother and all her friends and colleagues of the Istituto Sperimentale della Sardegna Zooprofilattico.
Rest in Peace forever dear and unforgettable friend.