Objective Survey on ticks and host animals of severe fever with thrombocytopenia syndrome virus (SFTSV) in Huanggang, Hubei province, to provide basic data for the control and prevention of this vector-borne disease. Methods Ticks and animal serum samples were collected from affected areas from April to June in 2013, and SFTSV were detected by Real-time PCR. Results A total of 256 ticks were collected from grassland and livestock, after classification and identification, these collected ticks mostly were classified to 4 species, 4 genus, 1 family, Haemaphysalis longicornis was predominant species. The results of Real-time PCR of ticks, cattle and sheep serum samples showed that infection rates were 3.13%(8/256), 17.65% (3/17), and 12.50% (1/8), respectively. Conclusion Haemaphysalis longicornis was predominant species in Huanggang, the results of Real-time PCR indicated that the SFTS may transmitted by “host animals-to-ticks-to-human”, avoid tick biting is the key to prevent this disease.

Objective To observe the control effects of 10% boric acid gel bait on cockroaches in the laboratory and field and compare it with residual spray in killing cockroaches. Methods The killing effects of 10% boric acid gel bait and residual spray were observed in the laboratory and simulated field according to the national standards GB/T 17917.7-2009 and GB/T 17917.10-2009. The decrease in cockroach density was determined by visual measurement after residual spray and application of gel bait in the field, and the killing effect was evaluated accordingly. Results In the laboratory and simulated field, all Blattella germanica died 2 d after treatment. In the field, the average density of B. germanica was 169.25/15 min before residual spray; the density decreased by 9.60% and 6.29% in the first and second weeks after residual spray of 10% cis-cypermethrin suspoemulsion plus 80% DDVP; then, residual spray of 10% cis-cypermethrin emulsion plus 20% propoxur EC was performed, and the density decreased by 6.63% and 5.51% in the third and fourth weeks. Finally, 10% boric acid gel was used, and the average density of B. germanica decreased by 94.10% and 100% in the first and second weeks after treatment. The average density of B. germanica was 1.38/15 min 1 month later. Conclusion The B. germanica population with high insecticide resistance is difficult to be control by residual spray, but 10% boric acid gel bait has good control effect on cockroaches and causes little insecticide resistance. Gel bait is recommendable for cockroach control.

【Abstract】 Objective To learn the resistance situation of Musca domestica from different areas in Hubei province to common insecticides and study its control measures.  Methods Topical application was used in this study.  Results The surveillance results indicated the average LD50 values of DDVP to housefly from different areas was 0.2256, 0.1908 and 0.4428 μg/housefly from 2005 to 2007, respectively. The average LD50 of alpha?cypermethrin was 0.0841 and 0.1102 μg/housefly in 2006 and 2007, respectively. The average LD50 of deltamethrin was 0.0371 and 0.0825 μg/housefly in 2005 and 2007, respectively. The average LD50 of etramethrin in 2005 and 2006 was 0.3952 and 0.2894 μg/housefly, respectively. The average LD50 of acetophenate in 2005 and 2007 was 0.3264 and 0. 3487 μg/housefly. Conclusion M.domestica had high resistance to organic phosphorus and pyrethrum insecticide in Hubei province. No obvious resistance against acetophenate had been found. The mixed and rotation use of insecticides contributed to the control the resistance development of M.domestica.