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Table 3 Tahyna virus is highly infectious and neurovirulent for weanling Swiss Webster mice, but strains differ in neuroinvasiveness

From: Tahyna virus genetics, infectivity, and immunogenicity in mice and monkeys

 

Neuroinvasivenessa (log10PFU)

Neurovirulenceb (log10PFU)

Phenotypee

Virus

LD50c

ID50d

LD50

ID50

Neuroinvasive

Neurovirulent

TAHV/58/CZ

3.5

3.5

0.5

0.5

Low

High

TAHV/58/CZ-cl(1)

1.5

1.4

0.7

0.7

High

High

TAHV/58/CZ-cl(2)

>5

4.5

0.8

0.8

Low

High

TAHV/68/FR

>5

4.4

0.7

0.7

Low

High

TAHV/68/FR-cl

>5

2.6

0.9

0.9

Low

High

TAHV/84/CZ

>5

4.6

1.1

1.1

Low

High

TAHV/84/CZ-cl

>5

3.5

0.3

0.3

Low

High

  1. a Groups of weanling Swiss Webster mice (21-23 days old) were inoculated intraperitoneally with 100 μL of diluted virus (0 - 5 log10 PFU).
  2. b Groups of weanling Swiss Webster mice (21-23 days old) were inoculated intracerebrally with 10 μL of diluted virus (1 - 4 log10 PFU).
  3. c LD50 = Lethal dose 50%.
  4. d ID50 = Infectious dose 50%.
  5. e Neuroinvasive phenotype: Low = LD50 ≥ 3.5 log10 PFU; High = LD50 ≤ 1.5 log10 PFU. Neurovirulent phenotype: High = LD50 < 1.5 log10 PFU.