Microbiology
In Widal test, the significant titre for O agglutinins is generally

1:150 or more
1:50 or more
1:2.00 or more
1:100 or more

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Microbiology
Which of the following is true to prevent botulism from smoked fish?

Good sanitation should be maintained throughout production and handling
All of these
Fish should be immediately frozen after packaging and kept frozen
The fish should be heated at its coolest part to at least 82°C for 30 min during or after smoking

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