Agriculture & Biology
rickettsial diseases
100%
Denmark
71%
travel
69%
history
50%
health services
27%
infection
17%
Rickettsia
16%
ticks
12%
signs and symptoms (animals and humans)
12%
hematophagous arthropods
10%
vasculitis
9%
tick bites
9%
laboratory diagnosis
9%
medical records
9%
telephones
8%
influenza
7%
Southern Africa
7%
fever
6%
interviews
6%
public health
6%
South Africa
5%
antibodies
4%
Medicine & Life Sciences
Denmark
70%
History
49%
Rickettsia
27%
Imported Communicable Diseases
21%
Primary Health Care
20%
Ticks
15%
Travel-Related Illness
11%
Spotted Fever Group Rickettsiosis
9%
Southern Africa
9%
Arthropods
8%
Hospital Records
7%
Clinical Laboratory Techniques
7%
South Africa
6%
Vasculitis
6%
Infections
6%
Anti-Idiotypic Antibodies
5%
Medical Records
5%
Registries
5%
Public Health
4%
Interviews
4%
Databases
3%
Mortality
3%
Serum
3%