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Furthermore, the infective ability of the virus must be maintained throughout all these stages. [50] In addition the risk for infection is also dependent on host immune system competency plus the quantity of infectious particles ingested. [41] Antibiotics may be used in dealing with airborne bacterial primary infections, such as pneumonic ...
Transmissibility is the probability of an infection, given a contact between an infected host and a noninfected host. [8] Community transmission means that the source of infection for the spread of an illness is unknown or a link in terms of contacts between patients and other people is missing. It refers to the difficulty in grasping the ...
A worm is a stand-alone malware software that actively transmits itself over a network to infect other computers and can copy itself without infecting files. These definitions lead to the observation that a virus requires the user to run an infected software or operating system for the virus to spread, whereas a worm spreads itself. [35]
The following outline is provided as an overview of and topical guide to concepts related to infectious diseases in humans.. Infection – transmission, entry/invasion after evading/overcoming defense, establishment, and replication of disease-causing microscopic organisms (pathogens) inside a host organism, and the reaction of host tissues to them and to the toxins they produce.
Infection control addresses factors related to the spread of infections within the healthcare setting, whether among patients, from patients to staff, from staff to patients, or among staff. This includes preventive measures such as hand washing , cleaning, disinfecting, sterilizing , and vaccinating .
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 February 2025. Computer program that modifies other programs to replicate itself and spread Hex dump of the Brain virus, generally regarded as the first computer virus for the IBM Personal Computer (IBM PC) and compatibles A computer virus is a type of malware that, when executed, replicates itself by ...
Breast milk is unlikely to spread the COVID-19 virus to babies. [78] [79] Noting the benefits of breastfeeding, the WHO recommends that mothers with suspected or confirmed COVID-19 should be encouraged to initiate or continue to breastfeed, while taking proper infection prevention and control measures. [79] [19]
This quantity determines whether the infection will increase sub-exponentially, die out, or remain constant: if R 0 > 1, then each person on average infects more than one other person so the disease will spread; if R 0 < 1, then each person infects fewer than one person on average so the disease will die out; and if R 0 = 1, then each person ...