and described by the formula: where A is the amplitude of oscillation, f is the frequency, t is the elapsed time, and is the phase of the oscillation. The phase determines or is determined by the initial displacement at time t = 0. A motion with frequency f has period. Two potential ambiguities can be noted:
Incubation Period Shingles is not transmitted from exposure to another infected person so there is no applicable incubation period. Anyone who has recovered from varicella may develop shingles. Mode of Transmission Transmission of the virus occurs through direct contact with the rash or fluid from the lesions.
Humans are usually infected by the inhalation of infective particles in the air. The incubation period is 5 to 14 days. Symptoms are generally those of the flu-fever, diarrhea, chills, congunctivitis, and sore throat. A number of tests are available to diagnose the disease in the live bird.eople are treated for 3 weeks, while birds are treated for 45 days. Salmonella. Salmonella is a gram negative aerobic rod-shaped bacterium that can infect people, birds, and other animals. It can persist in soil and water for long periods of time.