A person may be a carrier of a disease, such as Streptococcus in the throat, without exhibiting any symptoms. Depending on the disease, the person may or may not be contagious during the incubation period.During clinical latency, an infection is subclinical. With respect to viral infections, in clinical latency the virus is actively replicating. person may be a carrier of a disease, such as Streptococcus in the throat, without exhibiting any symptoms. Depending on the disease, the person may or may not be contagious during the incubation period.
The first commercial deployment in North America of camera phones was in 2002. The Sprint wireless carriers deployed over 1 million camera phone manufactured by Sanyo and launched by the PictureMail infrastructure (Sha-Mail in English) developed and managed by LightSurf.
Somewhere in either Chicago, Baltimore or Washington, someone plunked down $3,995 to buy the Motorola DynaTAC 8000X, the first handheld cellphone, on March 13, 1984 â 30 years ago today. We don't know who that first cellphone buyer was. At the time, the occasion didn't register as historically auspicious. After all, in 1984, the terms cellphone and mobile phone didn't refer to handheld phones; those terms referred to car phones, which had been around since the mid-1940s. What was celebrated at the time was the kick-off consumer cellular call â made to the great-grandson of Alexander Graham Bell â six months earlier.